Examine source code of stars y2k

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "stars y2k",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(238, 213, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(238, 213, 255)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(238, 213, 255)",
      "popup_border": "rgb(255, 255, 255)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgba(192, 167, 208, 0.62)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgb(238, 213, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ecfad4c8-7759-4116-9dc8-12f92965d5d9}"
    }
  }
}