If you want to customize the selection of background color in your favourite visual studio code. You can follow the following steps 

step 1:👉 Open your vscode and click the manage icon on the bottom-left side of your vscode 



step 2:  👉Click the setting option or press (ctrl+, for windows users)








 

 step 3: 👉 Click the open setting.json icon shows as the bellow picture





step 4: 👉Write the following code in your setting.json file 




copy and paste...


"editor.selectionHighlightBackground": "#7b7b7c4b",
"editor.wordHighlightBackground": "#7b7b7c57",
"editor.selectionBackground": "#969b9a2c"


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