Examine source code of verde...

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "verde...",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-017-7074520d97b5c592d413aed5f115f093.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(16, 17, 16)",
      "toolbar_text": "rgb(221, 251, 224)",
      "frame": "rgb(17, 17, 23)",
      "tab_background_text": "rgb(77, 255, 69)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(21, 255, 0)",
      "popup": "rgb(10, 10, 17)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_loading": "rgb(21, 255, 0)"
    }
  }
}