I find all the clay and smithing voxel indicator presets are hard to see in different ways. I want to be able to pick my own colors for it. It would also be nice if you could set presets depending on what you're doing.
For example: i find the default option hard to see when refining iron blooms and dealing with hot cold metals, but i prefer it when doing clay forming. so i often find myself hopping over to the accessibly options to change the preset in the middle of the smithing minigame or knaping or whatever.
Edit: It's option 2 i find hard to see with hot metals, default is hard to see with cold/dark metals, i don't know how i messed that up.