Hello guys and gals... I am no expert on fly tying, but I have to agree with mr black from Spirit River in reference to working with UV materials. When I first started working with many UV materials three or four years ago I predominately used black thread. It worked, however when through tying, if held up against one tied with white thread, they are shady if not dark. I'm not saying they don't still work, the colors are simply curbed somewhat.

When fishing with them, it seems that the white threaded ties get torn up the fastest. I have quit tying with all colors of thread except white, and at the end of the tie, I put on a black head, or red head or whatever the pattern calls for. It makes for a richer colored fly.