Man, I wrote something like this about 10 years ago. I used to work for a company that did a lot of 2d which created a bunch of different layers of differing colors. in order to find the correct part in all of those layers I wrote this routine to help.
It is old but it does still work. User defined .ini. (change the .ini.lsp to .ini)
LAYER_HL.dcl
LAYER_HL.ini.lsp
LAYER_HL.lsp
Funny I haven't used that prog in probably 6-8 years. I just looked at the code....WOW I would write it completely different today. I saw the dat was 2001, the original (non dcl version) was written in 1997, and only blinked one color (green).
Ah the good old days.
-garlic-
You have to open the lisp and change the path to match your path (Sorry)