UV Paint Doesn't Change Colors and Not Unwraping

Hey,

I’ve been making a model for a game I’m working on, and i need to texture it. The default color is black. I have found the color “wheel” thing and changed the color to what I need, but it doesn’t change the color when I paint. Pressing C, which Should be the default color changing key, if I’m not mistaken, doesn’t open up or change anything. Also, on a different issue, I can’t very easily unwrap anything. I click u, hit unwrap, and it doesn’t change. How can I make it change every time I unwrap after adding more seams?

Thanks.

You need to supply more info and an example blend file. What you have written is too vague

I click u, hit unwrap, and it doesn’t change
In the Image Editor window ensure to remove the Render Result if it is showing

The default color is black. I have found the color “wheel” thing and changed the color to what I need, but it doesn’t change the color when I paint.
Have you unwrapped your object and added the texture to the material
What renderer are you using
Have you watched some texture painting tutorials. If not, do so, It you have do what it shows you