Hi,
I was just wondering if anyone could help me with this. I recently started using Photoshop CS and am still green when it comes to its functions, etc. Today I was trying to play a little bit with the brushes and when I opened the Brush Palette I noticed I cannot do anything with COLOR DYNAMICS. I can modify all other parameters but this one.

It applies to every single brush I select. Can anyone help please?
Thanky