Examine source code of Clean Sand

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Clean Sand",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(213, 211, 199, 0.7)",
      "toolbar_text": "rgb(135, 135, 123)",
      "frame": "rgb(213, 211, 199)",
      "tab_background_text": "rgb(120, 114, 114)",
      "toolbar_field": "rgb(213, 211, 199)",
      "toolbar_field_text": "rgb(135, 135, 123)",
      "tab_line": "rgb(135, 68, 29)",
      "popup": "rgba(213, 211, 199, 0.9)",
      "popup_text": "rgba(24, 8, 5, 0.63)",
      "button_background_active": "rgba(255, 255, 255, 0.42)",
      "button_background_hover": "rgb(55, 35, 35)",
      "frame_inactive": "rgb(213, 211, 199)",
      "icons": "rgb(135, 135, 123)",
      "ntp_background": "rgb(191, 188, 174)",
      "ntp_text": "rgba(24, 8, 5, 0.63)",
      "popup_border": "rgb(207, 204, 183)",
      "popup_highlight": "rgb(0, 0, 0)",
      "sidebar_border": "rgb(191, 188, 174)",
      "sidebar_highlight_text": "rgba(255, 226, 12, 0)",
      "sidebar_text": "rgba(48, 42, 40, 0.57)",
      "sidebar": "rgb(213, 211, 199)",
      "tab_selected": "rgba(213, 211, 199, 0.68)",
      "tab_text": "rgba(120, 114, 114, 0.82)",
      "toolbar_bottom_separator": "rgb(203, 199, 173)",
      "toolbar_field_border_focus": "rgba(213, 211, 199, 0)",
      "toolbar_field_border": "rgba(213, 211, 199, 0)",
      "toolbar_field_focus": "rgba(213, 211, 199, 0)",
      "toolbar_field_highlight_text": "rgb(213, 211, 199)",
      "toolbar_field_highlight": "rgb(55, 35, 35)",
      "toolbar_field_text_focus": "rgb(55, 35, 35)",
      "toolbar_top_separator": "rgb(212, 208, 192)",
      "tab_loading": "rgb(135, 68, 29)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd5d4d06-33f1-45c7-9b8c-7cc7310c1434}"
    }
  }
}