not exactly a consultant but my friend in iran has a computer wholesale operation and coats his dvd/cd roms to match other equipment. like he coats a sony to match an LG monitor. he sources it to a guy that does this by matching the colors.
i don’t know anyone in particular in CA but there should be someone who does this if you want to go local. otherwise your best bet would be to just go straight to china and find an experienced guy who does this.