What does the highlighted text mean? What does black and white refer to?
They're talking about Wayne and Katy spending too much money.[Image]

Question

What does the highlighted text mean? What does black and white refer to? 
They're talking about Wayne and Katy spending too much money.[Image]

Answer

"There it is in black and white" is an idiomatic phrase saying that it is written on a piece of paper (especially an official one).

Answer

it means that it's clearly written in black ink, on white paper and there's no disputing it.