Here you go. Let me know if you have any questions.
I do have a couple of things to say about color though: be bold in experimentation. You can only learn from what doesn't work. Generally it's very hard to make things stick out on a background that has the same color as the thing; for example, Vaporeon would have a hard time being prominent underwater unless you really understand how to work with light and color.
You need to give yourself good starting colors to work with, in a speed paint. If you only want to spend an hour or two on it, you need to lay out a good foundation. The rest of it, the part that looks good, is honestly not as important, because if you have a bad foundation, it doesn't have a chance of looking good.
Always draw from the colors you've laid out. There are a couple of exceptions that I follow, and that's if I don't have a light enough color. For instance, in the ice beam, I wanted it to be a little brighter, so I stuck some BRIGHT YELLOW-ORANGE on top of the blue, which helped a ton in making the blue stick out. This is a good trick to remember: to make a light stick out, stick a very bright variant of the complement of the color on top. That is what I did here: orange and blue are complements, so to place the orange-yellow on top of the blue helped the blue to look very bright.
Anyway, I might make a guide later to how I understand color, and different ways I use it. For now, I hope this helps!