How to set the colors of all blocks in simulink to black (only one color)？如何将​simulink中所​有的Block的颜色​全部设置为黑色（只有​一种颜色）

There are many modules with different colors in Simulink. Due to the large quantity, I want to restore all colors to the default black color at once

Simulink 中有很多不同的颜色的模块，由于数量较大，想一次性把所有的颜色恢复为统一默认的黑色

I don't know how to find all the blocks

不知道如何查找所有的Block