The STM did not even tell the ARTM that they will change the colour of their buses to purple. They just did it. The ARTM learned about the colour change at the same time as everyone else, during their press release.
At the same time, I feel there is lack of enthusiasm for unifying signage on the bus network as a whole. Even in the official standards, it’s relegated at the end of the handbook, for a handful of pages. It very much seems an after-thought.
It is pretty sad, there was a golden window, with the REM and bus network redesigns happening at the RTL, STM and EXO, to review and draw up cohesive wayfinding standards for the entire metropolitan bus network.