My understanding is that most dogs are red-green colorblind (so much for Christmas for them). I remember seeing a poster of a lovely dog in a field of grass and flowers, with a “smile”, with the caption:
Roses are greyViolets are grey…
OK, so the second line isn’t quite right, but you couldn’t help but smile at the poster.
Collision – definitely.Accident? Not likely. SOMEONE is at fault.