so I used some contact paper to make myself one.
I'f choosen a wood print, but its available in every color.
also on my blog :
Step 1: Supplies
-phone or other device
Step 2: Cut
Step 3: Paste
Step 4: Cut Again
Cut in the corners so you can fold them around
Step 5: Finish
now your done!
If you dont really like it, you can just pull it of, again is the hair dryer usefull to soften the plastic a bit so you can peel it easier