You can easily make your own with a canvas, a paint brush, masking tape, and three colors + white acrylic paint. Just tape up your canvas every which way, paint a gradient of each color in the taped segments and remove the tape
LA CALAVERA by Adriana. pefect side view of skull paint. wish i had seen this earlier on in the season so i couldve modeled my paint grim trails towards this rather than the way ive been sort of just fudging it and making it up as i go.