FloodFill in a transparent .gif in a PictureBox

Hey all,

I created a template image, a .gif with transparency (for rounded corners that blend with the background), and I want to have this in a container such as a PictureBox. This itself is not a problem, but the issue is that I want to be able to fill in a large portion of the card (currently all gray) to whatever color I want.

Using the FloodFill API, I am able to fill in the whole PictureBox with the color of my choice, but if AutoRedraw is on (or if I refresh the PictureBox) then it reverts to the original image. Is there any way I can fill in just part of the image using FloodFill, or is there some other function I can use?

Otherwise I'll have to somehow work it out using Shape controls, but that would be a big hassle.

Thanks!
-PtG