Here are the links to the CAA Papers:
http://www.caa.co.uk/application.asp...detail&id=2407
http://www.caa.co.uk/application.asp...detail&id=2408
As I said above, I suggest you read Paper 2 first as this centres on the QinetiQ research, which is quite encouraging.
Then read Paper 1.
The one line I really like (and I am paraphrasing very loosely) "we know that there are several redundancy systems that permit identification of systems other than by colour, e.g, audio, flashing lights, but we are going to ignore all of them because we are only interested in colours".
What absolute rubbish. The whole idea of such redundancy is to enable persons to identify warnings, etc. by various methods. To only consider colour as a criteria is ridiculous and my interpretation of the QinetiQ study is that, so far as the cockpit environment is concerned, colour seems to be the least important of the stimuli. There are occasions outside the cockpit where correct colour identification would be more important but even these hardly seem to be critical to flight safety.
In any case, as I've already said, make up your own minds.
Cheers,
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