Background Colour ADM file

Create a bkgrdcolour.adm file with the below

CLASS USER
 CATEGORY !!categoryname
  KEYNAME "Control Panel\Colours"
   POLICY !!policyname
    EXPLAIN !!explaintext
     PART !!labeltext DROPDOWNLIST REQUIRED
      VALUENAME "Background"
       ITEMLIST
        NAME "Standard" VALUE "58 110 165"
        NAME "Test GREEN" VALUE "0 64 0"
        NAME "Production RED" VALUE "128 0 0"
       END ITEMLIST
     END PART
    END POLICY
 END CATEGORY
[strings]
categoryname="Background Colour Options"
policyname="Change the background color of the client computer"
explaintext="This policy sets the background colour of the client computer"
labeltext="Choose a colour"