Examine source code of blue&dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blue&dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(91, 210, 230)",
      "toolbar_text": "rgb(32, 39, 47)",
      "frame": "rgb(94, 234, 255)",
      "tab_background_text": "rgb(213, 213, 213)",
      "toolbar_field": "rgb(32, 39, 47)",
      "toolbar_field_text": "rgb(213, 213, 213)",
      "tab_line": "rgb(91, 210, 230)",
      "popup": "rgb(32, 39, 47)",
      "popup_text": "rgb(213, 213, 213)",
      "tab_loading": "rgb(91, 210, 230)"
    }
  }
}