Examine source code of dna2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "dna",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(14, 43, 67)",
      "toolbar_text": "rgb(86, 201, 209)",
      "frame": "rgb(23, 44, 56)",
      "tab_background_text": "rgb(82, 170, 182)",
      "toolbar_field": "rgb(54, 82, 107)",
      "toolbar_field_text": "rgb(48, 174, 203)",
      "tab_line": "rgb(11, 186, 220)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(16, 33, 89)",
      "tab_loading": "rgb(11, 186, 220)"
    }
  }
}