Request for AutoLISP

[SnickerinTurtles]

Hi all, I am new to posting so please forgive me if I make any mistakes. 

I am looking to create an Lisp that will change the color of a specific layer name. For example in a landscape drawing I have xrefenced in some civil files that contain layers "Project#-HC|C-BLDG-OTLN" or "Project#-HC|C-UTIL-WATR". Now I have to go through and change these layers to their specific color in when working in a landscape drawing for landscape plotting purposes. Is there a way to make a lisp so that anytime I run the command it will change layer color  of "Project#-HC|C-BLDG-OTLN" to color 152 and "Project#-HC|C-UTIL-WATR" to color 190. 

Hopefully I am making sense if not please let me know and I will try to be more clear.

Thank you.

[grobnik]

Thank you but I don't understand where to place the code you showed, it
should be replace some part of initial entire code ?

Thank you

[hak_vz]

With received key sequences you would use function entmode to modify one or more entities or use for what ever you need. If you need further help, please start new tread in this forum and describe your problem in details i.e. what you want to achieve. Attach sample drawing or part of your code.