While Yujia was out buying materials for the cloak, she came across her first dilemma.
She didn't know what Zixu's favorite color was.
Or, to put it in more exact terms, she had a faint idea of what his favorite color was, but she didn't know what it exactly was. It was either teal or blue. It had to be one of those two: she only ever saw those two colors around him, and besides, they were the most common colors in his paintings.
He did wear both colors in almost equal frequency, which also made the decision difficult.