What isn't a pattern 777?
Regards the colours... isn't the spectrum slightly scrambled here? I'm of course used to the idea that red is danger and green is 'all right', but red is the lowest frequency in the visible range of colours. 
See
http://www.uark.edu/ua/pirelli/html/...avelength.html
So is the point of this exercise to get us used to red? I'm not quite there.