double comments are not to be set

[MarcelXia]

{
    "tag": "//",
    "color": "#474747",
    "strikethrough": true,
    "underline": false,
    "backgroundColor": "transparent",
    "bold": false,
    "italic": false
  },

This does not work, it is always black Do this : // // a line with 2 double hashes. it is strikethrough black (even if you don't want strikethrough)

[ijjvim]

Try to reload window or restart vscode that maybe work