Blue and yellow make green! Kit: What will happen if we mix yellow and red? Yellow and red make orange! Pup: What will happen if we mix blue and red? Blue and red make purple! Kit: So, if you mix ...

What gives an Australian finch its brilliantly colored red, yellow or orange bill ... they can still make them in their retinas. "It's not that yellow-billed birds lack the genes for making ...

Yellow and red make orange! Pup: What will happen if we mix blue and red? Blue and red make purple! Kit: So, if you mix paint, you can make lots of different colours.