Yes, that image of mine wasn’t very instructive. I only sent that particular one because I already had it saved and I’m lazy.
At that time it was made I was only making sure that I had the means to recolor those icons if needed (which is what required using full white for solid parts). And in particular I was checking to make sure that the recoloring would have the latitude to work well on very light backgrounds too.
The assumption is that these would be white at the merge and default to white afterward. And then add a theme setting to change the folder color to anything if desired. I don’t have a need to change the document color but there might be times when that might be nice. I included them in that capture because at the time I was making sure the smaller internal icon was visible regardless of color chosen for document color.
Would you prefer that we use a particular color for folders by default? That is still possible, but I worry about how they might look in non-thumbnail views.