Especially color scheme is an option that has been requested multiple times. Here, it really shows I was not building it for an audience but just for myself. Now that it's public, I should consider making it more flexible without adding too much complexity. I think color schemes are relatively easy to add and might give a lot of value.
Inner/outer padding is something I haven't seen mentioned before, but totally get.
I need to figure out a way to keep it simple and cater to more use cases. I think both points are valid and I'm probably adding those short term.