there happen to be a few modded FXs in Islamabad in Pink, Golden and Purple color each and trust me, they look pathetic. at every vehicle, ppl mock at them. my brother once said "the car's worth 1 lac and the stuff on it is worth 1.5 but its still looking disgusting" and same is the case with others seeing the same.
your father is very right about its resale value so why not to simply put your extra money into resotring it to it's original condition so instead of saying the line above, ppl can instead look at your car and say "Mashallah, such an old car and so clean. a very didcated owner indeed."