Scripting Color Options

Working on templates for the eXcced card game, I had to deal with certain words appearing in a specific color. At first it was simple. In the game script file I used variations on:

replace@(
match: "[+][0-9] Armor",
in_context: "(^|[[:space:]])<match>|<atom-keyword><match></",
replace: "<b-auto><color:rgb(125,46,129)>&</color></b-auto>") +
The problem is each set has a new design, and the colors are not quite the same. Is there a way I can define a specific color in each set file as a variable that the game script then references? Something along the lines of defining a color named "armor" in each set file and changing the above code to: