Griffo,
Can't find a smilie for LMAO. Reg 35 requirement in Aus, especially for Transport Class A, is a PITA of the first magnitude. Minimum cost would be >$A800 for the most simple of variations, expanding on an exponential scale. It was mooted to me that changing the paint scheme on the blades (ie putting red where the white was on opposite blades, and vice versa, to create a flickering effect)
could unbalance the blades because of different paint weights, therefore would need extensive investigation
So I've got the manufacturer's scheme, ineffective, but legal
