Examine source code of Minimalistic black 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "meow2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(41, 41, 47)",
      "toolbar_text": "rgba(252, 251, 255, 0.92)",
      "frame": "rgb(16, 16, 17)",
      "tab_background_text": "rgb(246, 242, 247)",
      "toolbar_field": "rgb(22, 22, 25)",
      "toolbar_field_text": "rgba(255, 255, 255, 0.95)",
      "tab_line": "rgb(34, 33, 36)",
      "popup": "rgb(51, 51, 56)",
      "popup_text": "rgb(249, 249, 255)",
      "button_background_hover": "rgba(92, 90, 105, 0.54)",
      "icons": "rgb(215, 214, 231)",
      "ntp_background": "rgb(40, 40, 46)",
      "popup_border": "rgba(67, 67, 77, 0.92)",
      "tab_loading": "rgb(151, 188, 255)",
      "tab_selected": "rgb(37, 36, 41)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_border_focus": "rgb(72, 72, 84)",
      "toolbar_field_border": "rgba(15, 15, 16, 0)",
      "toolbar_field_highlight_text": "rgb(216, 225, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b584462-38fd-4d7f-a43a-d3530f7f390e}"
    }
  }
}