Not sure if this will help or not, but I have a font that has pretty much all the icons you are using that you can download. You could make them labels, and then have the ability to change the color just like any other label.
Here's a sample of the icons, but there will be an update to this very soon, it might be worth waiting for. I'm going to reassociate the labels with the letters that make sense, ie: R = repeat, S = Shuffle, etc...
I think I saw someone else here try to make the colors better to change out, but I can't find the thread for that.
You'll definitely want a better image editing program though, paint.net, photoshop, etc. Something with layer control and a lot more options than what MS Paint provides.