They have overtones like gold, blue, etc. Sunlight gives a living, vibrant sheen to the glimmer colors. Works well everywhere, even where rainbow trout don t happen. Might want to toss a golden shiner or shad pattern too. On all these skirt patterns, try the smoke trailer with silver, gold or copper metal flakes to match.
Contrast is an important thing in a lure.
In this case of contrast, the smoke trailer is used to sharpen the appearance and silhouette of the skirt's white or baitfish pattern. Also, I do not leave too much of the skirt trailing out past the hook. Bottom line, I like the skirt strands to be cut at all different lengths, forming the overall effect of a gradually tapering body. Worst to me is when the skirt ends are just cut square. You can also try a white single tail grub trailer instead of the twin tail.