‘How to colour the fast way on tb paint’

So fSo far I have being struggling to keep up with my morph project, I have created one to many frames, where to many thing are moving at once, and the props I have used have significant details, not only is it taking me time to animate, but colouring is taking a lot of my time up. So I have begun to research into ways and techniques that I could possibly quicken colouring in on Tv paint.