The ON/OFF label is ugly

![Screenshot from 2021-02-03 00-37-23](https://user-images.githubusercontent.com/71282548/106676890-08259280-65b8-11eb-9eef-290452d8d8fe.png)
The ON and OFF label of switch buttons is quite ugly, so please change it, i hope it's the right place for asking this.
I'm on Pantheon Desktop by the way.