Start with one and two color wrap schemes. 

Cost effective...... and effective!

The Kiss Method. Keep it Simple Stupid!

Check out the Killer Wrap by TKO-Graphix. Matte Black with Semi-Gloss Black accents 

Here are some more examples of one and two color wraps below.

http://www.tkographix.com/_Images/blog/matte-vinyl-vehicle-wrap-by-TKO-Graphix.jpg

http://www.lucentwraps.com/Portals/127686/images/matte%20black%20porsche%20panamera.png

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgys5HiayPWgYnMIGHgqm5NvL6dQ0YOLXsbOM1KOkwTvCFuwSEgq0fEz97D0zbmNwNqwP2WSTgjI2_pHQgIvzzUtpie61Rn2RceQ9FnWbHTvMqZ6suyzKaV-RRqvRO2lqQXrsoTk3YDt9KL/s200/Nissan-GT-R_Chrome-Wrap1.jpg

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi29oI7qN7xUTDAKvLMf21Byfai3tJidxWF6vfytY_v3Lne2hgqkY-hz7yafxV5lu49QKOwtFmjujqkSzsJRij7KN-Vo70MKhJBBdULGZB9tiFJ_PUjF2-NmX5-zCDUeLcygh3Ys1NP8MPE/s200/header_gtr.jpg

Too Cool. The matte colors, black, white, green, and I think orange are economical. (relative to a new paint job)