viewport or autoexec & macro?

[cormanthor]

I read somewhere (can't find it now of course!) that you can set up autoexecs to only fire on a per character basis. Isn't it just a matter of naming it "autoexec_cormanthor_gnomeregan" or something?
And how do I go about making that autoexec run a macro?

What I am trying to accomplish is simply executing a theme change in SunnArt Viewport when I change specs, but only on my Death Knight. A more elegant solution might be to just figure out how to do a viewport with OpenRDX. If this is possible, please let me know!