I'm having trouble with Riven's marble puzzle - mainly because I'm colorblind and cannot for the life of me tell the difference between them (I've already established where they're meant to go and how to discover which colors go to what). Can someone help me out?
I did a bit of internet searching, but I'm sort of afraid to look at anything lest it give away something else.

I think the marble's original positions on the right side are (from top to bottom)
1-red
2-orange
3-yellow - i think this one is the one that it's not used
4-green
5-blue
6-magenta
Does that help ?
Edit: If you're still having problems with the colors check the attached pic.

How badly colour blind are you? I'm also colour blind and can't tell the difference between the blues and purple and green and yellow but if you save your game, then interchange the marbles about in the spots you know they need to go you should eventually unlock it.

Try looking here: [url=http://webhome.idirect.com/~dswxyz/sol/riven_6.gif]http://webhome.idirect.com/~dswxyz/sol/riven_6.gif[/url]