First of all, hats off to you guys for doing this! I have difficulty discerning the various colors that can appear on the scrollbar and I'm optimistic about things being better with Idea 15. For my first bit of feedback, I'd would like to request a way to help people determine which adjustment they need (red vs green). The common term is "red/green colorblind" so it's hard to choose one vs the other sight unseen. From what I have been been able to determine, distinguishing Protanopia vs Deuteranopia is not trivial, so it's not like you can just take a quick internet test. It would be awesome if there was a preview showing the adjustments that get made with each setting. Even just showing a group of colors so people could ensure they can distinguish between them would help to make the right choice I think.