I too was reading Dave Hughes, the 2nd edition on Kindle.
Dave mentions the Snipe and purple. I hadn't used the pattern before 2 weeks back and had some positive takes on it.
Rainbows went straight for it. That purple must have pulling power.
I tied these up using woodcock hackle.
The lower 2 use shorter, mottled brown hackle and the other 2 have a longer light coloured hackle.
I couldn't resist tying 1 with a primrose silk body.