How to MAKE HIGHLIGHT between BRACKETS { } or other editor in MonoDevelop?

Question

Syntax highlighting

How to MAKE A BACKLIGHT between the BRACKETS { } in MonoDevelop or another editor as in the picture https://i.imgur.com/RCrOngo.png
It doesn’t really matter to me which editor to switch to, since I write for the unit only recently and I really would like not to suffer from the search errors in the code or just to improve understanding of how my code works and where I need to write my code so that it works in the unit, otherwise I’m doing ordinary imitation for the time being and this doesn’t make it clear how a programmer thinks on videos https://www.youtube.com/watch ?v=XVoPKLM5DuU
Thank you all who help