well, i don't want to be nosy, but it might help if we know the sponsors - if you can't tell them it's fine - but maybe their logo helps to create a entire theme...
on my old xy i just plastered it with decals of the sponsors - i didn't like the color much anyhow, so it was fine by me.
now i try to stay a bit more low-key with only white decals on black.
i can also see something like arb uses now for their vehicles. have the logo(s) across the entire truck...
please show us the outcome!
s