Can't find old tile in new SU 2019

I’m trying to match a floor covering I made in my model when using SU 2018, but Ican’t find it in SU 2019, even in my list of colors used (which is hundreds of colors long).

I have to do this patch because most of my floor is mirrored elsewhere, but there is a staircase in the school part, but not in this supermarket side shown. The patch extends under the bathroom, but I can’t cover it more without blocking the hallway. Using the eyedropper to pick up the color won’t work because it is a pattern. And clearly, I can’t even match the color very well that way either. What to do?

use the Paint Tool while holding cmd key and sample the old material then paint on new area…


It worked! I was even able to align the tiles. Thanks!