Oh, Watercolor? I know that one...the eerily Windows 8-esque placeholder they used before Luna was ready. I actually tried to port it back in late 2014. Didn't go very well, though that was likely more due to my lack of skills and decent tools at the time. I'm not going to make any promises, but I will say that I'd been debating whether or not to take a second shot at tackling Watercolor for a while now.
So tl,dr: maybe.
...look, I'm sorry I can't seem to give you a definitive answer...I just used to be really bad about taking requests and then struggling to follow through on them, often failing to do so in the end...and I don't want to repeat that mistake again. I hope you can understand.
In any case, though, I am flattered that, of all the Visual Style artists out there, you chose to ask me. Really means a lot to me... :7