Thanks :P I can barely see the colour, I made it that light to look smoother than white

You missed one place with white color instead of bg: http://i.imgur.com/ziXTmF4.png (marked red) ;)

You always can check you image for excess colors with that tool: http://akira.hopto.org/pj/

Fixed it, thanks for feedback. Also I included screensaver credits to not break the license of credits for my own, just in case.

One small note: Screen saver does not changes tube color on the way, it defined only at start.

Also you have some excess colors on the top-right purple tube segment when it changes color to pink. Plus some of the background are white (orange tube, purple-cyan and blue-darkPurple)