It's like github gists and instagram at the same time, because it let's you apply "filters" to your code (which are color palettes).
It's a funny idea, I like it!
I don't think that some of the commenters here got that... lol
When I saw this post I thought to myself "Code with colour filters applied?" When I clicked through it turns out it is just grey on grey so I can easily see why some wouldn't get it.
Its a funny idea, but I'm not sure its all that useful. Would probably be better if users could customize their profile page as well.