i was wondering whats the darkest black you can get i wanna paint my truck black but i want it to be the darkest black you can get i was also wondering if it would be ok to sand the bottom of my truck cab and the bottom of my bed on my truck and not prime it and put a rhino liner on it so it wont rust or should i put a primer on it first and then the rhino liner or is there something better than rhino liner that would stop the truck from rusting i aslo was woundering what grid of sand paper do i need to do a complete paint job on my 85 short wide chevy truck i need to know what all i need and what brand i need i know i dont want the house of colors brand cause its to high i want a good decent brand though thanks for taking the time and reading all this and please help me out on this thanks