Examine source code of AK black & white theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "AK black&white theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(1, 18, 27, 0.11)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(212, 197, 234)",
      "toolbar_field": "rgb(98, 85, 117)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(212, 197, 234)",
      "button_background_hover": "rgba(170, 128, 231, 0.48)",
      "icons_attention": "rgb(161, 99, 255)",
      "ntp_background": "rgb(98, 85, 117)",
      "toolbar_bottom_separator": "rgba(123, 243, 250, 0)",
      "toolbar_top_separator": "rgba(123, 243, 250, 0)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e34efdd7-389b-44a1-aa36-aabeac7b01c6}"
    }
  }
}