Yes its the best way for now. I use symbols too. Even if symbols are awesome, dynamic color library would be awesome too ! Imagine, Colors set in one place on sketch interface and change one of theses dynamic colors and that's changes that color on all the document ... :)

Yes, I knew all this ways and, I do text styles and symbols, a lot ;) . Actually it's not just about Text Color it's about using one color library for all objects in the document, texts ands shapes the same time. Sorry I should have made that clear.

Actually That could be awesome if MM be able to directly transform sketch symbols instead of vector shape with artboard inside or at least include symbols with artboard. thanks for the release ;)