User blog comment:NOBODY/Colour Blind - am I the only one who found it was easy?/@comment-30962703-20130613153931/@comment-1455034-20130613215135

I spent a lot of time on the level because I didn't know if it would be there the next day; Nitrome may have updated the game (this was before the game came out).

If it had already come out, I would have spent around 20 minutes on it then come and edit the Nitrome Wiki.