I just wonder why you want that effect. It was a legitimate question. I wasn't trying to give you a hard time.
Fair enough. I apologize for my brashness in that case. Through the ambiguity of text, I guess I picked up your question wrong, or felt as though I didn't have to justify my decision. It came across as a redundant, argumentative question. I sincerely apologize if that wasn't the case.
I want that effect because its aesthetically pleasing to my eye. It brings the consoles/controllers back to life, and makes them look new. I also don't appreciate the matte look the consoles/controllers have once they have been dried after being cleaned.
I just want to say that I don't do this to any consoles/controllers that aren't a darker colour, or consoles/controllers that are transparent, because unlike the darker consoles/controllers, it adds nothing to them.
Just out of interest Wiggy, not to be argumentative or smart, but have you tried doing it? You might like the result.

To iterate, I wouldn't suggest doing this to a console/controller that is either transparent or light in colour, it genuinely add's nothing to the finish, bar a slight sheen.