Guv
Forget the Hemp. The variations we had at Kinloss went from Turd brown to Salmon pink.
white top, grey underbelly simple logo (primary colors not more than 3) Elegant sweeping curves give the impression of speed and grace. The logo or parts of it should be repeted ie fin/engines. Well this is what a graphic designer once told me. We were very very drunk.
E-me your pic's for a look