Not yet, Ugh, definitely soon though... I started off with it set to MOD, and kept working around that... but after having died and having missed a follow breaking in a few really dark (or really red) places I'm thinking I'll just change it to blizz' default system (and perhaps even their default flash frames) and use transparent layers that pulse. Or put in an option for it...

I've never, to date, worked with savedvariables XD -- never made an addon that anybody else would ever use. (and wasn't sure anybody would use this!) But I'm definitely going to have to look into it when I get a chance here.... if you want a quick fix, you could try changing line 5 in the XML from alphaMode="MOD" to "ADD" -- which you still wouldn't be able to see in really LIGHT areas (shimmering flats pretty much) -- no idea if you'll be able to see through that in a dark place though XD -- any other changes you'd have to take a go at the transparency in the LUA for each change >_<