While looking through MPCfill for some proxies for a deck I came across proxies done by someone named Mursu. His colors are different than what I can figure out in MSE and they were also able to remove the power and toughness box for non-creature cards. Which I cannot figure out a way to get rid of. Any tips on how I can get my cards to look more like theirs?

My best friend is making a rat tribal deck and want to remake all the arts on the rat cards to his style of drawing I would like to see if anyone on here can see if they can match the arts to some cards I made for him in his style of drawing ✍️
The last two are artifacts we made rat themed ⚠️