The ones that come with the bike already are kind of like Deep Vs. I think the Julians are supposed to be like B43s; you don't need the upgrade... they are super heavy and it's just for style points really. But your bike is already going to look nuts so it would prob just be obnoxious.

GJ and scroca bring up good points though. It's cool that your parents are willing to get you that bike but you don't want to waste their money on something you 1) might not even like, and 2) will grow out of very soon. Cause right now the only thing you know you want are custom colors, and that's really the least important part about riding a bike.

The best idea is to get a cheap (~$200) fixed gear, ride it a ton, figure out what you're into... then either upgrade parts as you go, or work at McDonald's till you have enough money to build your own. At that point you'll know exactly what you like and be able to pick custom colors anyway. You'll learn a lot and it'll be really rewarding. Plus you'll end up cooler than all your friends, cause they might have crazy neon-colored bikes now, but you'll be the one who knows what you're doing instead of just getting something cause it's shiny.

Another option is to get the Motobecane Track. Ride it, learn it, maybe buy some Deep Vs and colorful bar tape if you still want to be snazzy. You'd look cool, be making a sound investment, and save your parents some money too. I mean there's really no room for regret if you go this route, whereas if you go nuts with the Scrambler you are likely to regret valuing form over function.