Examine source code of Minimalist Red-Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Minimalist Red-Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 0, 4)",
      "frame": "rgb(11, 11, 11)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 0, 4)",
      "popup": "rgba(0, 0, 0, 0.57)",
      "popup_text": "rgba(255, 255, 255, 0.57)",
      "button_background_active": "rgb(255, 0, 0)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(255, 0, 9)",
      "icons": "rgb(255, 0, 0)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(255, 0, 9)",
      "popup_highlight_text": "rgb(155, 155, 155)",
      "sidebar_border": "rgb(255, 255, 255)",
      "sidebar": "rgb(255, 255, 255)",
      "tab_background_separator": "rgb(255, 255, 255)",
      "tab_loading": "rgb(224, 255, 0)",
      "tab_selected": "rgb(0, 0, 0)",
      "tab_text": "rgb(255, 0, 4)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{325ca3fc-c461-4131-a18d-c389f02cd7b8}"
    }
  }
}