Examine source code of Proton ReDone - Darker

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Proton ReDone - Dark(er)",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(43, 42, 51)",
      "toolbar_text": "rgba(249, 249, 250, 0.8)",
      "frame": "rgb(28, 27, 34)",
      "tab_background_text": "rgb(249, 249, 250)",
      "toolbar_field": "rgb(96, 95, 106)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(66, 65, 77, 0)",
      "popup": "rgb(66, 65, 77)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(66, 65, 77)",
      "sidebar_border": "rgba(115, 115, 115, 0.5)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(66, 65, 77)",
      "tab_selected": "rgb(66, 65, 77)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(28, 27, 34)",
      "toolbar_field_border": "rgb(43, 42, 51)",
      "toolbar_field_focus": "rgb(96, 95, 106)",
      "toolbar_field_highlight": "rgb(11, 176, 204)",
      "toolbar_top_separator": "rgb(28, 27, 34)",
      "tab_loading": "rgba(66, 65, 77, 0)"
    }
  }
}