excavated chest filter

"I would like to know if it's possible to change at least the border of the Excavated Chests in the filter because they are too camouflaged with other white items. I’ve tried several lines in the filter:

Show
BaseType "Excavated Chest"

Show
HasExplicitMod "Excavated"

Show
Class "Chest"

None of them allow me to change anything. Is it possible? I just want to add a border for the normal, magic, and rare chests."