I am using the Bloc Theme from YooThemes for my webpage:
I'm looking to fill in those 3 colors with three colors that I have designed myself.
I used the eyedropper to pick up colors from other files and tried to fill the shapes. No matter what I've done - even using the pen tool to close in the shape the fill goes all over the whole page.Appreciate your help.
When I fill in the colors how can I also keep the 3-D effect?
You don't fill, you simply use an adjustment. Tint them with a Gradient Map, use a Hue/ Saturatioin shift or whatever - after you have isolated each stripe with selections. Or simply re-draw everything using simple rectangualr fills, gradientzs and perspective transforms.