One topic of style and design that we haven't discussed too much in this thread yet is "finishes" - both exterior and interior.
Regarding exterior finishes, in addition to colors and graphic designs we can also consider things like paint vs wraps. It has been mentioned but not a lot. Vehicle wraps have come a long way in recent years. At the annual SEMA shows I am amazed at the progression every year, with regard to not only the materials but the installation process. There have been wrapped vehicles on display that even upon close inspection it was very difficult to tell they had not been painted. And the array of effects, designs, and finishes available in wrap products is amazing; things that cannot be replicated with paints. Like everything in life there are trade offs with a wrap vs paint...and vice versa. But the newer wraps are much more durable, easier to care for, go on better (and can come off better if desired), and much more affordable than paint. They still require prep work, but not to the extent that paint does. And the process is much quicker.
For some reason a popular pattern with wraps (as well as for clothing and many other things) is "camo". Personally I don't get it, but it has been a trend for awhile. It has deviated from the classic military pattern of "cowhide" blobs and forrest plants to all sorts of geometric shapes, images and designs:
If you want the "camo" vehicle look, then I say do it right:
With wraps some get pretty far off into rather bold patterns and colors:
And others go a very different direction with graphics:
But obviously it is also available in all manor of more classic finishes; pearls, candies, flakes, flats, etc. As well as traditional patterns; stripes, two-tones, pins, graphics, etc. Too many great examples to post really, including terrific stock restorations with original colors that are no longer available in paints.