I always get frowned at for sayin' this, but for $300, you can dip your car camo and leave the silver base coat. It'll protect your paint and you can peel when your over it and want to change it up. I assume itll be cheaper then buying vinyl and hand cutting each camo spot.
You can do black, gunmetal, and maybe another type of grey or dark color to camo it with.
Good Luck