Boring slim case (e.g. black)?

[paulakreuzer]

Dye a white FP2 cover

I got my slim white case yesterday and within a couple of hours the edges had started picking up the blue dye from my jeans. Has anyone else tried out any other inks/dyes/paints on the slim cover? I’d like to do a permanent design on mine since I feel the white won’t stay clean for long.