Meanings of yellow notepad in English

Mary wrote the number down on a sheet of yellow notepad paper.

On the bottom of his yellow notepad, he wrote one word: CRAZY.

The content of the message comprised a number of claims that Gurney enumerated on a lined yellow notepad:

Fuji sat across from them on a striped ottoman, pulled out a yellow notepad, and flipped to a clean page.

I sat behind the desk, pulled out the tape recorder, and retrieved a yellow notepad from my briefcase, to sort of dramatize the atmosphere.

"How so?" Dr. Hall put his yellow notepad on his lap and clicked his ballpoint pen open-a habit that Dale found distracting and vaguely annoying.