Paint Master (Avengers)

What do you get when you combine an emotional teenage girl, artistic superpowers, and a Einstein Sibling? A superhero wannabe!
Esmeralda Colwell is 15 and was a normal teenage girl until some other worldly device smashed to the ground. Now she's only had 2 months to get the hang of these abilities before actually taking action.
With some gear made by her genius older sister, she's starting to get the hang of her job. But not enough so she's ready to help the Avengers take out an alien army and a god!
Why would the Avengers want help from the "Paint master" anyway?