Color Blindness and HP Prime keys color choice

[oldhpfan]

I just checked with my 83 year old father and he has no problem reading the keys, but then since his surgery he has better eye sight than I do . Still I'm taking the plunge.

In the past I've tended to customize the keys I use most and the Prime seems to have an easy way to remap the keyboard. I do wish there were overlays that I could write on like some of the older calcs (don't remember the numbers off hand, I go back to the HP-25 as my first then a 67 and there have been a lot since then).

Anyone with a 3d printer think of designing an overlay (are there transparent plastics for 3d printers? haven't looked at them for awhile)? If so have you shared the file so maybe I could find someone willing to print one? The idea of sticking labels on doesn't appeal (no pun) to me.

I got the Prime in my shopping cart, now I just need to buy it.