So I think this artsy character should be Sylvia (my alias). Her paints are her source of power and they're magical, each color creating a kind of effect that specifically does NOT hurt anyone.
Originally, she was meant for Super Smash Bros., but then I decided, with the help of @Gamefreak1996 , to change the Smash Bros. thing to a secondary story (and no, she won't do the same thing as Inkling; it's different, I swear).
I figured out her special moves and her standard attacks and even her taunts. However, I'd like to explain a bit about the world she comes from, first. It's called the world of Magical Art. If she were in a video game of her own, it would probably be called either Magical Art or Art of Fantasy. She's basically a young artist in a world of magic who thinks that art can be used for more than appealing images. (Keep in mind that this world is modern and it magic is a commonplace thing, while most other stories have something similar to medieval times when using magic as common the main world--I'm lookin' at you, Fire Emblem. I still love you tho--Anyway, Sylvia thinks art can be used for something better. Something different. So she used her magic and infused her power into her paint and became a fighting character. I don't quite know about the plot of this world yet, since I just created this character, but I'm thinking something along the lines of magic growing out of control.
Anyway, she has several different colors for several different abilities. Red is an attack deflector (launches attacks back at someone else), orange is buffs (support magic, increasing either the power of a teammate or the duration of her own paint magic), yellow is increased speed, so much so that it's hard to control, green is a trap (the person who gets caught is stuck to the ground for a few seconds), cyan is ice effects (people slide around and have a hard time regaining their footing), blue is random warp, purple is decreased power, pink is healing for either herself and/or a teammate (assuming there are teams in Smash), white is knockback shield (a bubble of energy that knocks her opponents back upon contact), black blocks the vision of others, gray is random intervals of altered gravity, and brown is slowness. She can also mix colors on her palette to create mixed magic, but then that gets WAY too complicated. And even she doesn't know all of the magic powers she has in her colors yet.
Now! On to the attacks!
Standard Attack: Flings paint all around herself
Standard Side: Flings paint to the side
Standard Up: Flings paint upward
Standard Down: Flings paint downward when in midair or flings paint all around herself when on the ground with a wider range to hurt more opponents
Side Taunt: Waves her paintbrush around and sprays harmless paint everywhere, ending in a cute pose with her paintbrush behind her.
Up Taunt: Tosses her paintbrush into the air and catches it skillfully, again, spraying harmless paint.
Down Taunt: Thinks for a moment, pulls out her lined notebook, and writes something in it with her pencil.
Standard Special - Rainbow Palette: Change color (and element) of paint in a similar fashion to that of Shulk.
Side Special - Paint Charge: Hands get covered in paint, paint flies around her, and she charges in one direction. Effects vary on the element and color of her paint.
Up Special - Acryllic Skywave: Arms get covered in paint as she flies up on a wave of paint that lasts about three or four seconds. Damages anyone in her path.
Down Special - Paint Vortex: Surrounds herself in a paint vortex, protecting herself.
And since @Gamefreak1996 did the whole intro thing, I suppose Sylvia's is this:
Sylvia Reviar resolves a win!
...I know, it's boring. Don't judge me...