Examine source code of Mavi-Gri-Mat

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mavi-Gri-Mat",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(30, 30, 30)",
      "toolbar_text": "rgb(125, 128, 125)",
      "frame": "rgb(30, 30, 30)",
      "tab_background_text": "rgb(125, 128, 125)",
      "toolbar_field": "rgb(55, 55, 55)",
      "toolbar_field_text": "rgb(252, 252, 252)",
      "tab_line": "rgb(6, 91, 225)",
      "popup": "rgb(30, 30, 30)",
      "popup_text": "rgb(215, 226, 239)",
      "button_background_active": "rgb(6, 57, 136)",
      "button_background_hover": "rgb(55, 55, 55)",
      "icons": "rgb(6, 91, 225)",
      "ntp_background": "rgb(30, 30, 30)",
      "tab_loading": "rgb(6, 91, 225)"
    }
  }
}