Hi DavidInMD,

You can use the change of colour when wet as a "feature" though, and have some with your yellow hooks and some without. It may be that one day one kind will outfish the other with the reverse happening the next. Have you noticed any such difference between the two versions?

I've tied up some white grub like nymphs with a thin layer of white floss over top of bright yellow, or red, etc floss. The thin layer of white softens the colour, and makes it more "mottled" looking. When the fly is fished, the colour is more apparent because the fly is wet, but it's still not as strong as leaving out the white layer. I call them "chameleon caddis nymphs", but I'm sure it's been done before.

- Jeff