Click the Colour (and not the word)

This game at b3ta (they're the ones who previoulsy brought us Notepad Invaders and seem to be intent to put the 'c' word on their home page as many times as possible, so don't click through if you're easily upset by such things) is really rather tricky.
The clue is in the title; names of colours are shown in different colours, you click the colour that the word is displayed in... For example if BLUE came up, you'd click, Red! Easy. I couldn't get past level 2 but then I put that down to the fact that I'm on my laptop using the track-pad which is slightly disabling. Honest.
Oh, and try getting that tune out of your head after playing. That'll take much longer than 5 minutes...
UPDATE: I just read this through Bloglines, and the colours don't carry through on the RSS feed which makes the explaination above a bit more cryptic. Just click on the link and get playing - you'll get the idea!