Yep, as mentioned.. Snipe & Purple, and Kite's Imperial to name two distinguished purple patterns. Do they work because, or in spite of the purple though? A bit of both I reckon (like any other fly) but I do think that on certain days they can excel because of the purple. I've got a little theory about Purple/violet/Ultra-violet etc, but it's not sufficiently advanced enough to furnish you lot with!

What I do feel sure about, is that there is hardly a colour under the sun that won't have it's day. Picking that day day is the trick though.. it's not always obvious, and the colour selection isn't always logical. You can be it will be logical to the fish though.. as far as I'm aware they don't do mind games.. they just eat and make little fish.
Nice tying and nice shots by the way, Pengs