Examine source code of blue-dirty V2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blue-dirty V2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(212, 212, 212)",
      "frame": "rgb(42, 42, 46)",
      "tab_background_text": "rgb(214, 214, 214)",
      "toolbar_field": "rgb(42, 42, 46)",
      "toolbar_field_text": "rgb(223, 223, 223)",
      "tab_line": "rgb(48, 185, 230)",
      "popup": "rgb(42, 42, 46)",
      "popup_text": "rgb(200, 200, 200)",
      "button_background_active": "rgba(48, 185, 230, 0.8)",
      "button_background_hover": "rgba(234, 234, 234, 0.45)",
      "icons": "rgb(255, 255, 255)",
      "popup_border": "rgb(48, 185, 230)",
      "sidebar_border": "rgb(48, 185, 230)",
      "sidebar_highlight_text": "rgb(48, 185, 230)",
      "sidebar_text": "rgb(164, 165, 166)",
      "sidebar": "rgb(42, 42, 46)",
      "tab_loading": "rgb(48, 185, 230)",
      "tab_selected": "rgb(42, 42, 46)",
      "tab_text": "rgb(236, 236, 236)",
      "toolbar_bottom_separator": "rgb(64, 64, 64)",
      "toolbar_field_border_focus": "rgb(48, 185, 230)",
      "toolbar_field_border": "rgb(48, 185, 230)",
      "toolbar_field_highlight": "rgb(48, 185, 230)",
      "toolbar_field_text_focus": "rgb(177, 177, 177)",
      "toolbar_top_separator": "rgba(45, 45, 45, 0)"
    }
  }
}