I had trouble getting (OSH) red enamel & primer to stick to the nose cone plastic. dunno if there is a better choice of paints for that plastic.
on the first flight we got the Aerotech "bonus delay" and the rocket came straight down in to the asphault. the airframe tube was crushed but you know what, all the parts were intact, even the nose cone, just a minor dent!
so I flaked the paint off the nose cone, put all the parts back on a new airframe, and we're in business again! now it's flown a bunch of times.
someone here on TRF called Initiator the "Alpha of MPR" and it really is. both are great fundamental rockets.