> This is particularly true for the visually impaired and some elderly and neuro-atypical people.
The Slack and (Google) Photos icons on Android look so visually similar in the sea of green, blue, red, and yellow icons on Android that I frequently open the wrong application. Using my phone sucks.
Not sure if this will help you, but I keep just one homescreen page with my most-used apps on it, and I've developed muscle memory for all of them. When I set up a new device, I put the same apps in the same spots. Other than the inherent inaccuracy of touchscreens, I could probably open any of them blindly. I also only fill up the bottom half or so of the screen, so they're all easy enough to reach.
I don't know if you can change the icons with the default launcher, but you can with Nova Launcher. I changed pocket's icon to a taco. Not to make it visually distinct but because the placement of the icon on the background made it look like it was going into someone's mouth and I thought it was funny. Anyway, opportunities exist to improve your phone experience without needing to depend on Google to come to its senses.
The Slack and (Google) Photos icons on Android look so visually similar in the sea of green, blue, red, and yellow icons on Android that I frequently open the wrong application. Using my phone sucks.