diff --git a/Src/Notion.Client/Api/Databases/RequestParams/DatabasesCreateParameters/PropertySchema/SelectOptionSchema.cs b/Src/Notion.Client/Api/Databases/RequestParams/DatabasesCreateParameters/PropertySchema/SelectOptionSchema.cs
index 12989d1f..c31aef9f 100644
--- a/Src/Notion.Client/Api/Databases/RequestParams/DatabasesCreateParameters/PropertySchema/SelectOptionSchema.cs
+++ b/Src/Notion.Client/Api/Databases/RequestParams/DatabasesCreateParameters/PropertySchema/SelectOptionSchema.cs
@@ -1,4 +1,5 @@
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -8,6 +9,7 @@ public class SelectOptionSchema
 public string Name { get; set; }
 
 [JsonProperty("color")]
- public string Color { get; set; }
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
diff --git a/Src/Notion.Client/Models/Blocks/BulletedListItemBlock.cs b/Src/Notion.Client/Models/Blocks/BulletedListItemBlock.cs
index 145a37e5..e6711de5 100644
--- a/Src/Notion.Client/Models/Blocks/BulletedListItemBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/BulletedListItemBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -15,6 +16,10 @@ public class Info
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/CalloutBlock.cs b/Src/Notion.Client/Models/Blocks/CalloutBlock.cs
index f995e3be..d694e33c 100644
--- a/Src/Notion.Client/Models/Blocks/CalloutBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/CalloutBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -18,6 +19,10 @@ public class Info
 [JsonProperty("icon")]
 public IPageIcon Icon { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/Color.cs b/Src/Notion.Client/Models/Blocks/Color.cs
new file mode 100644
index 00000000..b4682a7b
--- /dev/null
+++ b/Src/Notion.Client/Models/Blocks/Color.cs
@@ -0,0 +1,64 @@
+using System.Runtime.Serialization;
+
+namespace Notion.Client
+{
+ public enum Color
+ {
+ [EnumMember(Value = "default")]
+ Default,
+
+ [EnumMember(Value = "gray")]
+ Gray,
+
+ [EnumMember(Value = "brown")]
+ Brown,
+
+ [EnumMember(Value = "orange")]
+ Orange,
+
+ [EnumMember(Value = "yellow")]
+ Yellow,
+
+ [EnumMember(Value = "green")]
+ Green,
+
+ [EnumMember(Value = "blue")]
+ Blue,
+
+ [EnumMember(Value = "purple")]
+ Purple,
+
+ [EnumMember(Value = "pink")]
+ Pink,
+
+ [EnumMember(Value = "red")]
+ Red,
+
+ [EnumMember(Value = "gray_background")]
+ GrayBackground,
+
+ [EnumMember(Value = "brown_background")]
+ BrownBackground,
+
+ [EnumMember(Value = "orange_background")]
+ OrangeBackground,
+
+ [EnumMember(Value = "yellow_background")]
+ YellowBackground,
+
+ [EnumMember(Value = "green_background")]
+ GreenBackground,
+
+ [EnumMember(Value = "blue_background")]
+ BlueBackground,
+
+ [EnumMember(Value = "purple_background")]
+ PurpleBackground,
+
+ [EnumMember(Value = "pink_background")]
+ PinkBackground,
+
+ [EnumMember(Value = "red_background")]
+ RedBackground,
+ }
+}
diff --git a/Src/Notion.Client/Models/Blocks/HeadingOneBlock.cs b/Src/Notion.Client/Models/Blocks/HeadingOneBlock.cs
index 67132fe5..ccf29220 100644
--- a/Src/Notion.Client/Models/Blocks/HeadingOneBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/HeadingOneBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -16,6 +17,10 @@ public class Info
 {
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
+
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
 }
diff --git a/Src/Notion.Client/Models/Blocks/HeadingThreeeBlock.cs b/Src/Notion.Client/Models/Blocks/HeadingThreeeBlock.cs
index 2e4dde99..73897da0 100644
--- a/Src/Notion.Client/Models/Blocks/HeadingThreeeBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/HeadingThreeeBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -16,6 +17,10 @@ public class Info
 {
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
+
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
 }
diff --git a/Src/Notion.Client/Models/Blocks/HeadingTwoBlock.cs b/Src/Notion.Client/Models/Blocks/HeadingTwoBlock.cs
index 82c75047..7b4e161e 100644
--- a/Src/Notion.Client/Models/Blocks/HeadingTwoBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/HeadingTwoBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -16,6 +17,10 @@ public class Info
 {
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
+
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
 }
diff --git a/Src/Notion.Client/Models/Blocks/NumberedListItemBlock.cs b/Src/Notion.Client/Models/Blocks/NumberedListItemBlock.cs
index 581d8977..189eedf1 100644
--- a/Src/Notion.Client/Models/Blocks/NumberedListItemBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/NumberedListItemBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -15,6 +16,10 @@ public class Info
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/ParagraphBlock.cs b/Src/Notion.Client/Models/Blocks/ParagraphBlock.cs
index 02560aee..f45e8628 100644
--- a/Src/Notion.Client/Models/Blocks/ParagraphBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/ParagraphBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -15,6 +16,10 @@ public class Info
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/QuoteBlock.cs b/Src/Notion.Client/Models/Blocks/QuoteBlock.cs
index 9a8dda8e..68479075 100644
--- a/Src/Notion.Client/Models/Blocks/QuoteBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/QuoteBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -15,6 +16,10 @@ public class Info
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/TableOfContentsBlock.cs b/Src/Notion.Client/Models/Blocks/TableOfContentsBlock.cs
index 49e11bf4..29305ca9 100644
--- a/Src/Notion.Client/Models/Blocks/TableOfContentsBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/TableOfContentsBlock.cs
@@ -1,4 +1,5 @@
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -11,6 +12,9 @@ public class TableOfContentsBlock : Block, IColumnChildrenBlock, INonColumnBlock
 
 public class Data
 {
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
 }
diff --git a/Src/Notion.Client/Models/Blocks/ToDoBlock.cs b/Src/Notion.Client/Models/Blocks/ToDoBlock.cs
index 0417827d..d2fcc75e 100644
--- a/Src/Notion.Client/Models/Blocks/ToDoBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/ToDoBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -18,6 +19,10 @@ public class Info
 [JsonProperty("checked")]
 public bool IsChecked { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Blocks/ToggleBlock.cs b/Src/Notion.Client/Models/Blocks/ToggleBlock.cs
index 2653cd1b..1367f40b 100644
--- a/Src/Notion.Client/Models/Blocks/ToggleBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/ToggleBlock.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -15,6 +16,10 @@ public class Info
 [JsonProperty("rich_text")]
 public IEnumerable<richtextbase> RichText { get; set; }
 
+ [JsonProperty("color")]
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
+
 [JsonProperty("children")]
 public IEnumerable<inoncolumnblock> Children { get; set; }
 }
diff --git a/Src/Notion.Client/Models/Database/Properties/SelectProperty.cs b/Src/Notion.Client/Models/Database/Properties/SelectProperty.cs
index 47e6fa64..dd1dfeb1 100644
--- a/Src/Notion.Client/Models/Database/Properties/SelectProperty.cs
+++ b/Src/Notion.Client/Models/Database/Properties/SelectProperty.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Notion.Client
 {
@@ -33,7 +34,8 @@ public class SelectOption
 /// Color of the option. Possible values are: "default", "gray", "brown", "red", "orange", "yellow", "green", "blue", "purple", "pink". Defaults to "default".
 /// </summary>
 [JsonProperty("color")]
- public string Color { get; set; }
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 
 public class MultiSelectProperty : Property
diff --git a/Src/Notion.Client/Models/Database/RichText/RichTextBase.cs b/Src/Notion.Client/Models/Database/RichText/RichTextBase.cs
index 1c9a7610..0b509325 100644
--- a/Src/Notion.Client/Models/Database/RichText/RichTextBase.cs
+++ b/Src/Notion.Client/Models/Database/RichText/RichTextBase.cs
@@ -42,7 +42,7 @@ public class Annotations
 public bool IsCode { get; set; }
 
 [JsonProperty("color")]
- // color: Color &#124; BackgroundColor
- public string Color { get; set; }
+ [JsonConverter(typeof(StringEnumConverter))]
+ public Color Color { get; set; }
 }
 }
diff --git a/Test/Notion.UnitTests/DatabasesClientTests.cs b/Test/Notion.UnitTests/DatabasesClientTests.cs
index b87fdd5e..a3254131 100644
--- a/Test/Notion.UnitTests/DatabasesClientTests.cs
+++ b/Test/Notion.UnitTests/DatabasesClientTests.cs
@@ -214,17 +214,17 @@ public async Task CreateDatabaseAsync()
 {
 new SelectOptionSchema
 {
- Color = "green",
+ Color = Color.Green,
 Name = "🥦Vegetable"
 },
 new SelectOptionSchema
 {
- Color = "red",
+ Color = Color.Red,
 Name = "🍎Fruit"
 },
 new SelectOptionSchema
 {
- Color = "yellow",
+ Color = Color.Yellow,
 Name = "💪Protein"
 }
 }
@@ -248,17 +248,17 @@ public async Task CreateDatabaseAsync()
 option =>
 {
 option.Name.Should().Be("🥦Vegetable");
- option.Color.Should().Be("green");
+ option.Color.Should().Be(Color.Green);
 },
 option =>
 {
 option.Name.Should().Be("🍎Fruit");
- option.Color.Should().Be("red");
+ option.Color.Should().Be(Color.Red);
 },
 option =>
 {
 option.Name.Should().Be("💪Protein");
- option.Color.Should().Be("yellow");
+ option.Color.Should().Be(Color.Yellow);
 }
 );
 }
@@ -303,17 +303,17 @@ public async Task UpdateDatabaseAsync()
 {
 new SelectOption
 {
- Color = "green",
+ Color = Color.Green,
 Name = "🥦Vegetables"
 },
 new SelectOption
 {
- Color = "red",
+ Color = Color.Red,
 Name = "🍎Fruit"
 },
 new SelectOption
 {
- Color = "yellow",
+ Color = Color.Yellow,
 Name = "💪Protein"
 }
 }
@@ -346,17 +346,17 @@ public async Task UpdateDatabaseAsync()
 option =>
 {
 option.Name.Should().Be("🥦Vegetables");
- option.Color.Should().Be("green");
+ option.Color.Should().Be(Color.Green);
 },
 option =>
 {
 option.Name.Should().Be("🍎Fruit");
- option.Color.Should().Be("red");
+ option.Color.Should().Be(Color.Red);
 },
 option =>
 {
 option.Name.Should().Be("💪Protein");
- option.Color.Should().Be("yellow");
+ option.Color.Should().Be(Color.Yellow);
 }
 );
 
</div><div class="naked_ctrl">
<form action="/index.cgi/larger-text" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://patch-diff.githubusercontent.com/raw/notion-dotnet/notion-sdk-net/pull/281.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://patch-diff.githubusercontent.com/raw/notion-dotnet/notion-sdk-net/pull/281.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text" selected="selected">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>