Looks like my old Super Star. I had full LED's in it as well, but I prefer the cool whites over the Retro-LED's. I guess it's just a preference, I just love good cool whites in new pop bumpers. Old pops can look a bit green, but brand new caps and pop bodies look magnificent.
I have a lot of EM's, and we use 100% LED's in all of them. They are just so much better for the machine and really make a game look fantastic if you do them with some artistic integrity.

I really can't tell you why. It's just a preference. If I wanted it to look like a 47 bulb, I'd use a 47 bulb and save a lot of money. That cool white has a clean blue tone that looks great on a restored game, and look to be at least 25% brighter than those retro bulbs. But that blue hue is the reason old pops look green. They are yellowed/browned from age, you add blue to yellow and you get green. New pops are pure white and they look amazing with good LED's. And I stress the word 'good', cheap LED's look like crap. They are dim and take away from the game.
I do use a lot of colors, but that's where you have to be careful. I've seen where people get all willy-nilly with the colors and it looks like ass. You have to pick a tone that matches the game (or plastic), then it's a matter of not overdoing it. Red can look cool, but if you do all the plastics in red, it's too much red. I usually do a red and a white, gives it the right tone, but you can still see the PF clearly.
Again, it really boils down to who is doing it, and having some class in how it's done. If it's subtle it looks great without blinding the hell out of you, or really being obnoxious looking. I've seen where people just jam all kind of blues and purples and reds in a game for no reason, I don't mention it to them, but just because it's bright doesn't mean it looks good.