Example of how to customize specific textmate rutes

usersettings.json

//https://stackoverflow.com/questions/46034188/add-an-operator-to-visual-studio-code-theme-in-settings-json
{
    "editor.tokenColorCustomizations": {
        "textMateRules": [
            {
                "scope": "keyword.operator.word",
                "settings": {
                    "foreground": "#569BD2"
                }
            }
        ]
    }
}