3ds Max :: Change Color Of Edges While Modeling In Symmetry

I know where the customize colors options is... but trying to guess at the meanings of the names is a very tedious process in max
 
So, I found the color for edges when working with geometry... but when I model something with a symmetry modifier applied, then the edge color defaults to the bright ORANGE color. What this color would be called?
 
And for that matter, any data base, online file, where these color terms are defined more clearly.  It's sometimes very tedious to trial and error these things, especially if you have to restart max every time you take a guess.