I'm not actually sure where to put this but there's a website you can play around on where you upload lineart and it will automatically color it for you. You can also give color hints to direct the colors, I played around a bit and recently they've updated with more colors Paintschainer link Spoiler: Examples (with my art) When it was new with a lot less color choices Updated and expanded color choices
ww yeah obviously it won't work for everything but it's fun to play around on if you're too lazy to color