I have a background like this: all pink. I want it split into three parts, like a flag (France or Italy, for example). Each part will have a different color. I don't want the colors blended, just like the flags mentioned. And I don't want to create a flag-like effect, by the way. ^ ^
How do I do this on Photoshop? Thank you in advance!
There is a little rectangular selection tool in your toolbox.
Use that and your color fill.
Or just use the shape tool to make rectangles/etc. You choose the color for that in the picker on the toolbar. Each shape gets a new layer so you may have to flatten it when you are done.
How do I do this on Photoshop? Thank you in advance!