Back home I thought, OK, I can try this.
Orange fluro thread with a stripping of Mallard quill over. Wee touch of red dyed possum thorax and Hungarian Partridge hackle (as are all three).

Chartreuse fluro thread with Peacock quill strip.

Red Uni thread with Peacock.

They kind of look pastey white when dry, but give them a soaking and I can see what the two gentlemen at the table were talking about.



They also had a very good trick for dealing with stiff quill bodies that may be hard to wrap or brittle and prone to snapping whilst wrapping.