Do recolors and colors count as uploading one's own work?

http://danbooru.donmai.us/posts?tags=pitui1996

As I see it, he generally does a pretty good job at coloring lineart and doing recolors, but does that count as uploading one's own work?

Yes I'm pretty sure that counts as uploading your own work.

I'd say leave it alone though since his work is actually reasonably good.

Either way, uploading one's own work has never been banned, just discouraged. This user is one shining example why it's not actually banned.