switching colors in photoshop

[xinhai]

Hi, photoshop newbie here. I am learning how to create digital paintings via wacom in photoshop. Is there a easier way to change your brush color, like a hotkey or a way to map the color hue variation to your wacom wheel? Currently whenever I need to change my brush color I have to lift my wacom pen to the swatches panel and click on the color I want, which is somewhat slowing my process down. Thanks.

[Jho]

Do you mean you jump between some specific colors? Or would you like to be able to change saturation of your current color trough a hotkey etc?

A very common way is to just paint some colored dots on a separate layer and scoop them up with the eyedropper tool when needed, like this (http://karetar.net//piirustukset/makuu_varit.jpg).

If you wanted more specified control over your colors, you should be able to create a hotkey for what ever you want to do in Edit > Keyboard Shortcuts...
Almost every action possible can be given a hotkey here, I suggest you search under Panel Menus for Color/ Swatches panel controls.

Hope this helps at all.