Silver (or any metallic) is the best color for cars if you are concerned with maintenance.
In my experience Turtle Wax Ice line outshines all other waxes in terms of the quality of the final result relative to the work you put into it. The best part is that you can use the products on all car surfaces without any white residue, what so ever. For the ultimate gloss, you can top the TW Ice with Lucas slick mist.
My routine is to wax the car about once every 2-3 months when the weather is good, and to use ever 1-2 days some TW Ice QD and some shop towels to keep the car free from accumulated dust.
For spray waxing, I like Lucas Slick Mist as it gives a wonderful shine after curing for a few hours. If I didn't mind applying paste wax, I would use a regime of regular washing and applications of Lucas Slick Mist.
Now this product does look interesting
http://www.turtlewax.com/main.taf?p=2,1,1,10
Quote:
ICE® Synthetic Spray Wax is formulated with a blend of carnauba wax and synthetic polymers to help hide light scratches and swirl marks. It is also designed to be used on automotive glass to clean and provide water repellency without streaking or smearing.
Product Benefits
Use on all exterior surfaces – paint, plastic, rubber trim, wheels and even glass!
Helps repel water, dirt and dust, keeping your car looking cleaner longer
Can be applied in direct sunlight or on hot surfaces without streaking or leaving white residue
Provides U.V. protection to help prevent fading from harsh sun exposure
Clean an average size sedan in less than 10 minutes