When2Meet: A free scheduling service powered by div opacity

We use this to schedule a D&D game, but the gradient of "green to a slightly different green" makes it difficult to tell what's going on sometimes.

I've given up on this and Doodle (their UX is deeply confusing to me - scrolling horizontally to display the various dates instead of vertically seems like such an obviously wrong choice, especially given that in my experience there is usually relatively few people but a lot of dates) and instead just made a Google Sheet template that I use.