It appears that my supplier of the more magenta-violet color of LEDs (in the 460-nm range) have discontinued their line of products. I will be unable to create items that shine in that color once supplies have run out. I will instead make LED devices that use roughly 400-nm wavelength colors, on the border of the Ultra-Violet A band. To see a side-by-side comparison, see the images below.
I apologize for the inconvenience. Time, as well as science, marches on.