Worth it?

I was originally going to get a kindle, but I can't find many coloured ones, and that's what I'm looking for.

But the thing is, I need to get ao3 fics up on there but idk if I can do that on a kobo since I've never had one and I can't seem to find time to read a physical book.

Is there Web search on the kobo? And the features if anyone knows in a more general and normal explanation.