I was initiated to Plastidip today, as I blacked out the rear garnish on my SR5. I hadn't read JayG's post above, but by a stroke of luck, ended up following his advise. I picked up a can yesterday at Home Depot and kept it in the house, as the temp dropped into the lower teens last night (the garage stayed between 40-50 degrees). It took about 4-5 light coats to completely cover the garnish.
A couple of things that I learned:
1) Don't tape to close to the object being sprayed. Leave about an inch around the object. It is much easier to peel off a larger amount of the Plastidip than very thin sections.
2) Overspray is abundant, so be liberal with covering the area around the object. I had about 12-15 inches of paper surrounding the garnish. I still got overspray on the rear window and bumper. If that should happen, I found that IPA (not the beer!) was good at removing the overspray.
3) I found that a rag or paper towel was useful at removing the Plastidip in tight spaces. I sprayed directly over the 4Runner lettering on the garnish and peeled the Plastidip off when dried. The Plastidip did not peel as well as I had hoped in between the lettering, and the rag helped remove the residue in the tight areas and corners on the lettering. Just be careful not to rub against areas that you do not want to remove the Plastidip from. I have one small spot within the Toyota emblem that will have to be re-sprayed due to not heeding my own advice.
4) Don't be alarmed if your second and subsequent coats look spotty (as if the spray is clumping) as you apply it over the initial coat. There are a lot of solvents in the spray that evaporate as it dries. This is why light coats may work better (also prevents running).
Just my experience after using Plastidip for the first time today.