Examine source code of BluCrystals

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "BluCrystals",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(34, 48, 172)",
      "toolbar_text": "rgb(173, 235, 255)",
      "frame": "rgb(21, 33, 119)",
      "tab_background_text": "rgb(126, 176, 234)",
      "toolbar_field": "rgb(21, 51, 78)",
      "toolbar_field_text": "rgb(163, 206, 255)",
      "tab_line": "rgb(114, 186, 255)",
      "popup": "rgb(5, 5, 75)",
      "popup_text": "rgb(164, 207, 255)",
      "ntp_background": "rgb(34, 48, 172)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(0, 120, 255)",
      "popup_highlight": "rgb(31, 0, 176)",
      "tab_loading": "rgb(114, 186, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{46d8c387-497f-43fa-a9ff-7fdf4bc2739d}"
    }
  }
}