Need to dye plastic. What dye do I use?

SEM is great. Super awesome.
But I actually use the OEM Ford stuff lol. It's tough and simple, just etch and apply. It's gone from -23 (colo) to over 114 degree ambient (phx) no problems at all. On multiple cars. One of 'em was even almost a mopar (*dsm). Just an FYI if you are in a time fix, hit the Ford counter.