The choice of colours on the cancellation map at the top left of most forum pages is something I set up when the maps were first added and has been tweaked occasionally since. Most recent, trains that were running but with formation changes were changed to pink so that they are now clearly visible but not overpowering of cancellations.
Whole route cancellations are red, and until a few minutes ago part route cancellations were in a similar colour - comment made that perhaps that those two colours were too close. As an experiment, I have change the partial route colour to a grey and would welcome your input as to which you prefer. I can then go with the majority for Christmas on onwards.
I am, of course, hoping for a cancellation-free week that make it very difficult for you to see any difference, but fear that is just a dream.