Color codes

Im going to lift my engine out during the winter holiday to fix it up with a new fresch paint. At the same time im gonna beadblast the k-frame to make it look nice and clean up the nest of wiring!

The problem is i dont know how color codes work, ive got a color code , i think , its PPG paintnumber: SKO 7850 . Is it just to tell the guy that mixes that code and he will understand what im talking about or do i need anything more ?

Whats recomended, to base coat the engine before puting on the orange or just spray over the old layer of paint ?
Im also gonna paint my alu heads and intake which dont have any paint on them.

Thx all!


Heres a pic of the result of the code above: