I have several parts that use a standard color block to represent a conductive copper finish.

Last week I found a surface within one of those parts that had changed color.

I could not get it back to the color of the surfaces around it.

I matched all color values and lighting values.  It still looks very different.

I also noticed that the STANDARD/DULL/SHINY drop-down box has been changed to STANDARD/GREYSCALE/PASTEL.

Any ideas how to get my color back?