Examine source code of Mountain Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mountain Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(4, 54, 112)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(34, 57, 127)",
      "tab_background_text": "rgb(220, 219, 226)",
      "toolbar_field": "rgb(7, 31, 67)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(4, 54, 112)",
      "popup": "rgb(15, 40, 85)",
      "popup_text": "rgb(196, 196, 196)",
      "ntp_background": "rgb(9, 27, 56)",
      "popup_border": "rgb(7, 31, 67)",
      "toolbar_field_border_focus": "rgb(67, 120, 176)",
      "toolbar_field_highlight": "rgb(34, 104, 195)",
      "tab_loading": "rgb(4, 54, 112)"
    }
  }
}