Thanks Lowesjackson. We have country wide distribution in India for Optimum products and Opti Coat, Opti Seal are quite popular so I won't think there would be any issues with the environment. However, as you aptly pointed out, Opti Seal flashes rather quickly so I would like to hear from Chris or Dr. G if average temperatures of 100 F / 38C could affect Opti Seal application.
I was hoping for some paint darkening like what OCW does.