What is the saying that calligraphy is written on orange paper?

No, it just looks more quaint and beautiful. High-end and high-grade.

Personally, I don't like bright orange. I suggest you choose a slightly elegant light brown or nude color. It will look better if there are patterns sprinkled with gold or silver. Try the gold powder of dark blue paper. These art shops are available. Buy a piece of paper in 5.6 yuan.