《旧五代史·后周·列传六》
庄宗在邺宫即帝位，冯道任省郎，兼任翰林学士，从穿绿衣赐穿紫衣。
庄宗即位鄴宫，除省郎，充翰林学士，自绿衣赐紫。
Zhuangzong took the throne in the Ye Palace, Feng Dao was appointed as the provincial official, and concurrently as the academician of Hanlin, and was given the purple color dress instead of the green one.