This highlighting indicates language injection (https://www.jetbrains.com/help/webstorm/2017.1/using-language-injections.html) - WebStorm auto-injects HTML in ES6 template strings. This injection is hardcoded and can't be disabled. If you don't like its green background, you can change the color in Preferences | Editor | Colors & Fonts | General / Code / Injected language fragment settings, Background.
This highlighting indicates language injection (https://www.jetbrains.com/help/webstorm/2017.1/using-language-injections.html) - WebStorm auto-injects HTML in ES6 template strings. This injection is hardcoded and can't be disabled. If you don't like its green background, you can change the color in Preferences | Editor | Colors & Fonts | General / Code / Injected language fragment settings, Background.
Thank you!