1) Ano and dye the graphic color.
2) Place the stickers.
3) Bleach/acid wash the surrounding color off.
4) Dye the next color.
5) Repeat for more colors.
6) Seal normally.
7) Remove stickers, then and goo with lacquer thinner.

Seal some more.
That's the simple version. I'm going to have to start charging for ALL my sectrets.