Similar thing happened to me - a client didn't like a shade of blue I was using, even though it was the exact shade she had told me to use. She then sent me a P

Similar thing happened to me - a client didn't like a shade of blue I was using, even though it was the exact shade she had told me to use. She then sent me a PowerPoint file with just a blue box in it and told me to use that blue instead. Of course it was the exact same blue as before. I re-sent her the file, and she immediately transmitted her enthusiastic approval.