Don't know if it only occurs on TB7, but
when you select a LOOK option such as "curved links", it apply for all brains. (same for thought borders ...)
This is not the case with custom notes style ("default notes style" and change font/background colors). (same for font itself ...)
don't know if it is a bug or a feature, but the two different behaviours in the same option panel is disconcerting.
French user - TheBrain 7 beta.