Here you go. Thankfully it says they're available in other colors.
or if you want to break out of the circle and do something crazy you could use side-emitting fiber optic cable and use a color wheel to get whatever colors you want on the fly and bend to whatever shape you want.
btw, i found this on a local site here in South Africa...
you think this will be fine for my intended use?
i don't think the EL-strip will bend in the way you want it to for the illuminated face to be facing up... but i've been wrong before. Can you get a small sample to experiment with?
Go to google products and search for EL wire. Several computer stores sell the stuff for about $10 for 5'. It is really flexible. A friend of mine did all the lines on the dash of his Cavalier with it....It looked good.....then he wrecked it.....