colour is just representative, you'll find fish take most colours on cheeks, they seem to see the cheeks as the trigger mechanism, and at different depths colours vary so much, what is lime green at a few feet, can look blue fifteen feet down, same goes for cloudy water, it all changes the colour of the fly, so it makes sense to have a variation of colours, we found late in the season over here fish were taking buzzers with the body made from bright blue polypropylene rope fibres, a small black head, and holographic tinsel as a wing case, we had over 40 fish in three nights with it, if I can find one I'll post it for you to see.