"青出于蓝而胜于蓝"的英文谚语怎么说?

The new coming from the old is better than the old. 不知道对不对哦

The pupil outdoes the master.

一定要谚语吗？如果不需要，那么 surpass 就够了。

His achievements surpassed his teacher.

Indigo blue is extract from the indigo plant, but is bluer than the plant it comes from.
好象是这个