So glad to see this thread! Yeah, I am red-green-colorblind.
I've written to Elektron several times about this (and yes, I even used the argument that their current strategy reduces their potential customer base by 10 percent), but alas, no change. I use their instruments a lot, mostly A4 and OT, and they require a lot more attention to grasp their track states. But ultimately, at least for me, the benefits of these instruments still outweigh the additional effort to track their tracks's states, as there are still other ways to find out what is going on.
About 10 years ago I was contemplating purchasing a Genoqs Octopus hardware sequencer, contacted the manufacturer in Germany and finally did some tests with alternative colored LEDs. I found out that red/blue LEDs do work for me. Genoqs would have been willing to do an Octopus with red/blue LEDs, but went belly up before the project went further.
I would love to use The Harvestman Hertz Donut MkII, but I failed to decipher its states when using a friend's system. So I wrote to Scott Jaeger, who was kind enough to not only answer, but research for alternate parts. The LEDs are integrated into the button assemblies of the Hertz Donut, and unfortunately he can't find red/blue LED button assemblies at his suppliers.
So I've been visiting the Enchroma glasses website quite often for over a year: They claim to have developed multiple notch color filters which attenuate certain colors, so that the colors which humans with colorblindness have difficulties differentiating stand out more. That was a complicated sentence for a non-native speaker.
Being based in Europe, I have not yet found the guts to order on of their glasses. At the same time I ordered & imported quite some Monome modules, so you see where my priorities are.
Might this be difficult for humans with epilepsy? Just guessing from the video game warnings.