Hah I traditionally draw my comic, but it's not painted, unfortunately.
Lost Honey is a fun watercolor comic I've been enjoying. I'm a sucker for the soft, vibrant colors and soft linework.
There was also a comic I read back in the day that was half watercolor and half digital that was an enjoyable read, although it's been long discontinued. Toilet Genie (Unfortunately you can only read the whole thing on Smackjeeves)
Another watercolor comic, and one that is possibly on indefinite hiatus. It's good if you're into LGBT+ slice-of-life, dramas.
Yet another discontinued comic. This one was mixed media, colored with inks then finished off in Photoshop. I never got around to reading this one so I don't know much about it outside the the description.