I haven't studied the colour genetics of pigeons enough to speak with any authority, however looking in the Squills book, Blue to blue produces blue. No other possible outcomes. All other colour combinations appear to produce variants or at least possible different outcomes. It would appear that blue is the dominant colour. Wild rock doves seem to back this up. There are obvious blue colour variants, chequer, etc and there are similar red variants. Mealy to mealy can produce blue hens, so I would suspect mealy is not a pure colour.
Is the very dark chequer a cock because the rogue parent has to be a cock.
Scotland is a matriarchal society. You know who your mother is. Pigeons are the same, unless ...........
Occasionally hens have been known to lay in the wrong box.
Several variants within the problem. Let the basket decide and it may turn out to be something that will make no difference in the long run.