Idea Summary
The IG save button is hot (primary color) to make users aware to save their changes. If you have multiple grids on a page and even a page primary button you end up with plenty hot buttons, nerfing their ability to stand out.

I would like the save button to be white by default and only become hot when the user changed anything inside the grid.

Preferred Solution (Optional)
Component setting sets the default. Plus a region attribute to overwrite it.