[krapp]

It looks like you have an interesting take on tripcodes, although users with colorblindness issues might have some trouble differentiating.

[oky]

that's a great point. here's what it looks like in BW: http://i.imgur.com/p84tu3f.png

i'm wondering what a good way to work for colorblind people would be.

[AustinDizzy]

Replace the colors with patterns in a colorblind mode (e.g. A left striped replaces blue, a right striped replaces green, a vertical striped for red, a right horizontal stripe with dots in the brighter spaces for yellow, etc.).