I'm going to take a crack at the possible outcomes and percentages of a Bumblebee X Firefly (Pastel Fire), please correct me if I'm wrong since no genetics info websites get this deep.
Bumblebee X Firefly
Normal 6.25%
Fire 6.25%
Pastel 12.5%
Pastel Fire 12.5%
Super Pastel 6.25%
Super Pastel Fire 6.25%
Spider 6.25%
Spider Fire 6.25%
Bumblebee 12.5%
Bumblebee Fire 12.5%
Killerbee 6.25%
Killerbee Fire 6.25%