[BUG] Not enough contrast between P1 and P2 labels

[aminomancer]

The P1 and P2 squares are too similar in color. We should change the priority colors so there can be more contrast. P1, P2, and P3 are all blue, maybe add some more color. P5 is so rarely used that it can be less visible, so if you need to adjust all of them to squeeze out more contrast, making P5 less visible would be fine.