Help with alpha channel animation in photoshop

Hi

I’m drawing an animation in a 2D animation application called TVAS, and i now need to color every single frame. The program renders the animation as a separate TGA file for each frame. I want to color them in photoshop, but i dont know how its done mostly automatic.

The alpha channel that is outputted is attached here (resized to fit the upload standards here), and i want to be able to, easy and quick, color it. Please give me a guide to how i turn this alpha channel into a black outline layer that i can paint behind.

Cheers
/Aske