Color Blindness and HP Prime keys color choice

[DrDevinci]

Nothing magic about the stickers. Just transparent labels printed on a color wax printer (gives a nice smooth feel to the ink).
Text layover created in a pain full Photoshop document with various typefaces and some times pure graphics to match the original shapes.
   
Print fits within a mm on a 6.7cm label. - Avery 08620.
I cut the sheet under 10x magnification microscope and applied to all grey and white keys.
Not a perfect match but it really makes a different, even in low light. (would be great if the printer would accept fluorescent ink).

Not sure on the longevity of the print either or if the labels will collect dirt along the edges and look ugly. I tried to make the cuts exactly the size of the front beveled edge of the keys but it didn't work for all of them.