Your'e right, the closer the better with gray. Even shiny gray. The checkerboard on the tail and ramps, and the stars and bars will help a little, but not much. Fortunately we have trees at both ends of the field, so that I'll have some contrast on takeoff and final.
I'm only going to fly this bird at the two paved fields close to home- a 300 foot runway in Midland, MI (where I'm a member) and the full size strip in Thompsonville that we get to use twice a year for the airshow.
None of the grass strips near here are suitable- too bumpy and a real risk of FOD. At 43,000 rpm, I don't want even a grain of sand to get in the intakes. Gonna start carrying a broom, along with my folding chair.