Well maybe not very purple, maybe more maroon.
Only when I was resizing these to post did I notice that this particular model seems to have something called 'Weinmann Semi Automatic' brakes? Or perhaps just the cable adjustment is semi automatic, either way, it does not seem to be something that has caught on. A little light googling suggests because it leads to uneven brake usage over time, and therefore crashing! Good luck to this rider then.