I know that the new background colours help some kind of colour blinds differentiate the colours easier, but I am also a colour blind (Deutan) and I can hardly tell the difference only if I look hard enough, even though I had no problem before.
I feel like it would be a lot better if there was a colour blind option that you could turn on and off.
What I meant is that shape differences would be an option I would take before something like a colorblind toggle. Before shape differences, I want to see if I can just tweak the colors to work reasonably well for everyone. The inventory UI is already really cluttered and I'd like to try and avoid pushing that further if I can. The latest beta has some more color tweaks that I'm quite a bit more confident will work for people.