Disable language injection (green) highlight

Hi there,

Yes and No -- It depends on the language as in some cases injection regions are hardcoded (e.g. in JavaScript).

But in general -- "Settings/Preferences | Editor | Language Injections" and disable all unwanted injection rules (that can be turned off)

In case it annoys you visually, you can remove the green highlight colour.

To do so, go to:
Settings | Editor | Color Scheme | General and under Code you'll find "Injected language fragment".

Uncheck Background in the right hand side.