Need LISP to change Layer Colors

I am seeking help in finding or writing a LISP that will change colors of each layer from one designated color to another to update office standards. For example, all layers with color 01-Red shall become 13-Dark Pink, all layers with color 14-Maroon shall become 01-Red, etc.

Many years ago, I saw this LISP in a magazine and managed to copy and edit it for my needs, but it has beeen lost. I've searched the web and the site to no avail. I apologize if I've missed something obvious or already posted.

My LISP skills are very limited, but I can copy and past and edit color numbers:D

Thank you for the great forum! Your help this this would be appreciated.

Try the Laytrans command

Cool command, but I'm looking to automatically convert many layer colors to others for many drawings. Also need to set up others' computers to do the same.

Oops, misunderstood the request... try the attached, compliments of Hot Tip Harry

COLORF.LSP

Thank you so much. It will take some study, but I believe this lisp will do what I wanted and more.

I really appreciate your help and fast response:)