Examine source code of clasic2000

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "clasic2000",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(191, 191, 191)",
      "frame": "rgb(60, 56, 56)",
      "tab_background_text": "rgb(185, 185, 185)",
      "toolbar_field": "rgba(0, 0, 0, 0.48)",
      "toolbar_field_text": "rgb(252, 252, 252)",
      "tab_line": "rgba(60, 56, 56, 0.66)",
      "popup": "rgb(225, 225, 225)",
      "popup_text": "rgb(3, 3, 3)",
      "button_background_active": "rgba(0, 0, 0, 0.48)",
      "button_background_hover": "rgb(185, 185, 185)",
      "frame_inactive": "rgba(60, 56, 56, 0.66)",
      "icons_attention": "rgb(255, 255, 255)",
      "icons": "rgb(238, 238, 238)",
      "ntp_background": "rgba(108, 108, 108, 0.54)",
      "ntp_text": "rgb(14, 14, 14)",
      "popup_border": "rgba(0, 0, 0, 0.54)",
      "popup_highlight_text": "rgb(179, 162, 162)",
      "popup_highlight": "rgba(185, 185, 185, 0.93)",
      "sidebar_border": "rgb(120, 104, 104)",
      "sidebar_highlight_text": "rgba(34, 34, 34, 0.93)",
      "sidebar_highlight": "rgb(0, 0, 0)",
      "sidebar_text": "rgba(0, 0, 0, 0.93)",
      "sidebar": "rgb(0, 0, 0)",
      "tab_background_separator": "rgba(0, 0, 0, 0.93)",
      "tab_selected": "rgba(0, 0, 0, 0.48)",
      "toolbar_bottom_separator": "rgba(0, 0, 0, 0.54)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgb(0, 0, 0)",
      "toolbar_field_highlight_text": "rgba(108, 108, 108, 0.54)",
      "toolbar_field_highlight": "rgb(179, 162, 162)",
      "toolbar_field_separator": "rgb(252, 252, 252)",
      "toolbar_field_text_focus": "rgb(0, 0, 0)",
      "toolbar_vertical_separator": "rgb(238, 238, 238)",
      "tab_loading": "rgba(60, 56, 56, 0.66)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d2abf07-d8df-4e57-9113-9c04a30a291d}"
    }
  }
}