As others have suggested, I would definitely find a medium red with diamon dusting to cross it with so that you don't have to do so much work to try and get the color back. Here is one person's blog with a suggestion:
http://blog.powellgardens.org/...
"One of my favorite “reds” is ‘Scarlet Tanager’ with “diamond dust” making the flowers sparkle."
Here's a red-red that supposedly has diamond dusting:
http://www.perennialnursery.co...
In my garden, I have reds and purples that are shimmery, weather cooperating, of course. Off the top of my head, I might recommend the following:
Spider Man:
Evening Enchantment
Fear Not
Dominic (this is much darker than the picture makes it look and it will almost undoubtedly darken the color of all of the babies it produces with your daylily...I'm *guessing* that it will throw only medium-red genes only a small percentage of the time. I'm not an expert in daylily genetics, but from what I *do* know about genetics, I'm guessing there are quite a few genes on daylilies that influence color, and Dominic likely has plenty of whatever triggers darker color...and that dark-color-gene is likely co-dominant; so the likelihood of it throwing only medium-dark red or lighter is likely very low. I hope that makes sense.)