For what it's worth...
I spoke with a good lawyer friend of mine who has made his living for the last 30 years dealing with motor vehicle cases.
His thoughts on the FL statute were simply that the state reserves the right to drop the hammer on you if you are using a vehicle to mislead someone or for other nefarious means.
He specifically mentioned functioning lights on a car painted black & tan as being a huge beacon for the FHP (or any other Florida agency). However, he cited several examples of private citizens, who he personally knows, who own restored police vehicles (going back to the 40's), who use them for the specific intent of parades & to bring awareness to organizations like DARE, Crimeline, etc.
The way he made it sound, it sounded to me like it would be something they would take on to an arrest/other charges to compound the crime/violation.
Just some food for thought.
If someone wants to pay for a new paint job for me, I'll be happy to test the theory, as I feel confident in my legal representation.
