Examine source code of Raspberry

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Raspberry",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-025-ffb27cfded66d27a465aeffe41e9fe61.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(123, 5, 104)",
      "toolbar_text": "rgb(138, 0, 255)",
      "frame": "rgb(227, 0, 255)",
      "tab_background_text": "rgb(134, 18, 99)",
      "toolbar_field": "rgb(255, 128, 218)",
      "toolbar_field_text": "rgb(153, 9, 231)",
      "tab_line": "rgb(255, 10, 176)",
      "popup": "rgb(172, 12, 172)",
      "popup_text": "rgb(71, 0, 88)",
      "tab_loading": "rgb(255, 10, 176)"
    }
  }
}