I posted this on the fly tying board in Fly Tlak, but got no responses. Let me try it here :Some of the plastic tube material I am using for tube dries is almost clear. Some is slightly whitish opaque. Some is black. If you are tying on tubes in the colors of a popsicle, would you avoid anything but clear tubes for the lighter weight tubes? Specifically, is anybody successfully taking fish using the "brake line /fuel line" opaque colored tubing for dry line, popsicle type marabou flies? thanks. I do not personally think white'opaque vs. clear makes a difference , but would welcome your thoughts.