The problem I have seen with the "stippled" that I have seen is muddiness. I think it is because the dots are too small, too close together, not uniform in size/shape, and the color of the dots tend to taint the background color. There is a LOT of work to be done in that area before they are "beautiful"--at least to my eye. I look forward to the day when there is a daylily flower that has a near-white background color, with 1/16" diameter, perfectly uniform, round, red dots all over it that are not crowded---Polka dotted--if you will. That will be a fine day indeed!
In the near term---one might use a clarifier and see if that helps. Pat Stamile used Great White to clarify his pink line. It also helped to make his whites---whiter. I think his Michael Miller has a similar ability--but not as consistent---as Great White. A clarifier may clean up the background to make the dots more distinct. Then again--it may eliminate the dots altogether. It's worth a try.
