What 'coloured' ceilings are we talking about?
For the most part, the TTC paints the ceiling over the tracks black these days (it was once white); with the exceptions of Queen, (red/blue/white striped effect), Pape (navy blue) and North York Centre with blue reflective slats, most ceilings over the tracks are black.
Over the platforms, the default finish is either white, or matte or reflective silver/grey.
Here, you're getting white over the platform. The black shouldn't be predominant at all, it will read white, unless you're looking up between the slats.
Keep in mind, as well, if we get full-height platform edge doors, the ceilings over the track will barely be visible.