Examine source code of azul_lluvia

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "azul_lluvia",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(252, 252, 252, 0.41)",
      "toolbar_text": "rgb(23, 73, 130)",
      "frame": "rgb(168, 185, 201)",
      "tab_background_text": "rgb(188, 79, 125)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(39, 43, 32)",
      "tab_line": "rgb(137, 25, 25)",
      "popup": "rgb(243, 243, 243)",
      "popup_text": "rgb(137, 25, 25)",
      "tab_loading": "rgb(137, 25, 25)"
    }
  }
}