I have seen some excellent hi-vis schemes on r/c model aircraft which may work well for full-size too. One of the best was dayglo orange against black. Has anyone seen this in large scale? (as a possible alternative to the blue/black against yellow).
I certainly agree that the paint job is only part of the package. These days I prefer to fly around with as many bright lights on as possible, especially by day. Many years ago during a SAR I saw, heard and literally smelled (!) a Jaguar at 500 ft that narrowly missed us, just after we selected our landing light on to help another rotary aircraft see us. I am convinced that the Jag pilot had not seen us until then - he was pulling hard G to pass our port side. We certainly did not see his cam until too late to do much avoiding! We were bright red and white/grey at the time, not so good a scheme even as the current colours. Lucky day for all concerned.
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Fly safe!