Examine source code of aespa theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Aespa theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(215, 192, 246)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(195, 175, 226)",
      "button_background_active": "rgb(106, 62, 150)",
      "button_background_hover": "rgb(67, 43, 98)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(221, 205, 242)",
      "icons": "rgb(221, 205, 242)",
      "ntp_background": "rgb(195, 175, 226)",
      "ntp_text": "rgb(248, 243, 250)",
      "popup_border": "rgb(2, 0, 3)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(221, 205, 242)",
      "sidebar_border": "rgb(215, 192, 246)",
      "sidebar_highlight_text": "rgb(195, 175, 226)",
      "sidebar_highlight": "rgb(195, 175, 226)",
      "sidebar_text": "rgb(195, 175, 226)",
      "tab_loading": "rgb(215, 192, 246)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3f6fd8e1-154d-4bc4-a940-bbcbc14cc2be}"
    }
  }
}