Haven't started my BB dynasty yet, but I looked at the households and found some single sims that look promising, which to me means "are artistic" (note I kept switching active households via edit town...though I didn't even let an hour progress {kept pausing the game}... so this info should be accurate, unless I wrote something down wrong in which case I apologize! I'm sure the Sims wiki will be updated soon enough, though):
Jasmine Noon
20 days to elder
Artistic, Clumsy, Good, Virtuoso, Loves the Outdoors
6 painting, 10 charisma, 5 guitar
12 Porthilly View
Odessa Cross
5 days to adult
Brave, Clumsy, Artistic, Childish, Friendly
10 logic, 7 cooking, 6 gardening
61 Driftwood Drive
Fiona Fleet
8 days to adult
Loves the Outdoors, Virtuoso, Good, Clumsy, Artistic (same traits as Jasmine Noon)
3 athletic
38 Old Fisherman's Pass
Juliet Verona
16 days to adult
Great Kisser, Bookworm, Excitable, Hopeless Romantic, Artistic
5 charisma, 6 fishing, 5 writing, 6 guitar
1447 New Barnacle Blvd.
Ahmed Barbarossa
3 days to adult
Slob, Natural Cook, Party Animal, Artistic, Heavy Sleeper
1 painting, 2 cooking
33 Old Fisherman's Pass
Fun fact: Lives in a household with two roommates, one of whom is named Lee-Roy Johnkins (a reference to Leeroy Jenkins of World of Warcraft fame)
Honorable Mention-- Richie Radan
-18 days to adult
-No Artistic trait or painting skill (he's actually Evil even) but-
-Has VFN Kompensator and laptop in inventory (though he has a roommate who I suppose might end up with the car...still, chance you could make decent money from selling the car...I think it's 36k)
-43 Rock Pool Park
I'm thinking that Juliet Verona looks most promising. Even though she has no painting skill to start, she does have many other useful skills (I'm thinking that writing skill could make a nice amount of starter funds with books) and the Artistic trait, as well as other traits I think are good (Hopeless Romantic is great for writing romance novels and Bookworm is of course great for fast skilling with skill books). She also is near the beginning of the young adult stage.
Hope this list helps! I'd love to see other suggestions of good BB sims!