It's hard to say whether blue and red really go together well. It’s a divisive question in the world of color theory. While ...

Pup: What happens when we mix them together? 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?

It's much more common to have trouble telling apart shades of red and green, blue ... or a mix of these. Here's what this number seven looks similar to for someone with a more common color blindness.

Pup: What happens when we mix them together? 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?