Q: changed colors

Open the Universal Access pane of System Preferences, click on the Seeing tab, turn off White on Black, and drag the Contrast slider all the way to the left.

(70049)

I know this is awfully late but I've been looking for hours for an answer to my G5. 10.4.11 color question and here it is.  And SO SIMPLE!!!  My colors are absolutely Beautiful.

Thank you, thank you, thank you Niel.  Wish I could give you some credit. 

.....goldie

Wow! It fixed it! I have no idea how it got switched in the first place. We did have two power outages this week and my cat was crawling on the keyboard, but that's it. Thanks for the help, Niel!

THANK YOU!!!!