So there's a color select, where you highlight every piece with a certain color. And there's an area select, where you draw a rectangle, and everything that rectangle touches gets highlighted. But something I find frequently happens is that you have a color in one section of your build. And then in another part of your build you have the same color but you want to change it. When you go to highlight the color, you highlight all of the color. If there was a way to do a Color Area select you would select the area with only the part of the color you want to highlight. It could work like this, when you pres "w" on your keyboard the options come up.

press the "Color Area" option --> select a piece --> select an area

The computer would combine the two selections and would select only the color in the area you want.

I hope this wasn't to confusing to understand, and I hope the "Color Area" selection becomes an option (I know I would sure use it). Thanks, @Sothis.