I posted this over on the ICS Calendar blog, but it’s probably of some interest to the audience of this blog, dealing with the intersection of code and design.
HTML has “named colors” which are… weird. And I have finally given up on using them in the plugin, which was a bit of a silly thing to do anyway, when there are 16 million RGB colors at one’s disposal. The post ends with swatches of both the old and the newly revised color palettes.