In my opinion, Forever Black is a much underrated product. I’ve got no idea why, but you don’t often see posts about it and when you do they all seem to be derogatory. There is one terrible video of a guy applying Forever Black, who obviously had no idea what he was doing, so possibly that video has gone viral and turned people off.
Forever Black is definitely a black dye. Whatever trim it goes on will be made permanently black, so I suggest you do a test spot to be sure that you like the look.
I can’t advise on the Aztek as I’ve got no idea what an Aztek is. I’ve used Forever Black many times on vehicles such as the older 3 and 5 series BMWs which all had protection strips along the doors, plus inserts in their front and rear bumpers. I’ve also used it on the plastic moldings on the wheel arches on X5s etc. Basically any car that has protection strips or bumper inserts.
If Mike’s photo is an Aztek then it is likely that you will need more than the standard 4oz bottle, but you will find that Forever Black does go a very long way. I’m still on my first 4oz bottle and I’ve lost count of the numbers cars that it has done.
The advantage of Forever Black is that it is permanent; it does not wash off during the next wash, like so many of the other useless products.
FB also comes with a cleaner and it is most important to prepare the molding correctly before attempting to apply FB. My usual procedure is to pressure wash first, and then use the cleaner. You’ll also find the cleaner very useful for cleaning up the last detailers mistakes. Great for combining with a tooth brush to remove old compound/polish/wax etc stuck under window trims, in door handles, and any of the rubber trims.
The trick to using FB is to use it sparing and spread it evenly with either the built in applicator or apply the FB to a foam applicator and apply with that. Depending on the condition of the molding, it may require up to three applications (allow about 15 minutes drying time between coats) to ensure an even coverage. Just don’t apply it heavily and try to do the application in one pass as it will look terrible, just like it did in that bad video.
I usually remove the protection strips, especially if I’m also polishing the car (usually heaps of dirt etc under them) which makes it much easier to apply when removed from the car. If you decide not to remove, then you do need to take care where the strip abuts the panel because if the FB dries on the panel, it can only be removed via polishing the paint. The trick is to slowly move the applicator about a 1/32 inch away from the edge of the strip and let the capillary action allow the liquid to flow to the edge. Obviously you need a steady hand doing it that way.
Good luck with it, if you decide to use it, but I’m sure you’ll be pleased with the results.