Examine source code of Cherry Day

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "cherry day",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(241, 110, 152)",
      "toolbar_text": "rgb(188, 237, 255)",
      "frame": "rgb(182, 15, 60)",
      "tab_background_text": "rgb(229, 250, 255)",
      "toolbar_field": "rgb(53, 28, 35)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(110, 238, 220)",
      "popup": "rgb(26, 43, 49)",
      "popup_text": "rgb(199, 208, 207)",
      "sidebar_text": "rgb(244, 79, 132)",
      "sidebar": "rgb(247, 205, 217)",
      "tab_text": "rgb(251, 217, 225)",
      "tab_loading": "rgb(110, 238, 220)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2491d06d-3df3-4cdf-8940-729c06fac39d}"
    }
  }
}