Wow great input everyone!!
I think we'll keep it somewhat simple for 2012 since we're halfway through the year. I want to see these vehicles hitting the trails, there's enough rescue vehicles on pavement already.
For 2013 we'll up the anti and/or see about adding levels.... maybe stripes or stars to denote rank (hell most of you are current or retired military so that should be a good fit!)
That color scheme is exactly what I was thinking of, for my vehicle at least. Maybe a bit more aggressive of a font though?
And would it be easier/cheaper/better to Just do 2-3 standard colors to suit everyone? Each one will have a different number so I wasn't sure if it then mattered what colors we do since they'll be one-offs regardless....