Screenshot, showing Go in blue, XSLT in pink, EmberScript in off-white, Gnuplot in a slightly paler pink, and Processing in a slightly darker blue

Yes, they all at least run, some even do something!

• stripe-1.go was tested in The Go Playground
• stripe-2.xslt was tested with This XSL Transformation tool and an XML document with at least a valid root element.
• stripe-3.emberscript was tested with the EmberScript editors on <emberscript.com>, and then Ember Twiddle
• stripe-4.plt was tested using gnuplot -p stripe-4.plt
• stripe-5.pde was tested using Processing for macOS

Idea shamelessly pinched from spacekookie/gay

Other GitHub Repo Language pride flags: alexwlchan/asexual, Geo1088/bi, mattbischoff/bisexual, TartanLlama/non-binary, issyl0/pan