Examine source code of Cosmic Colors

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cosmic Colors",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg",
        "images/2.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center",
        "right center",
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(19, 27, 62)",
      "toolbar_text": "rgb(59, 56, 234)",
      "frame": "rgb(5, 17, 81)",
      "tab_background_text": "rgb(238, 8, 9)",
      "toolbar_field": "rgb(100, 140, 181)",
      "toolbar_field_text": "rgb(14, 21, 89)",
      "tab_line": "rgb(7, 225, 14)",
      "popup": "rgb(161, 206, 230)",
      "popup_text": "rgb(14, 21, 136)",
      "button_background_active": "rgb(17, 235, 35)",
      "frame_inactive": "rgb(230, 6, 61)",
      "icons": "rgb(53, 68, 238)",
      "ntp_background": "rgb(43, 159, 57)",
      "ntp_text": "rgb(11, 65, 102)",
      "popup_border": "rgb(175, 187, 13)",
      "popup_highlight_text": "rgb(232, 42, 12)",
      "tab_loading": "rgb(7, 225, 14)"
    }
  }
}