Examine source code of TheFreshTheme3

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "FreshTheme3",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-007-ea06061a8f8be943739a27dace8dc532.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(38, 128, 145, 0.77)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(86, 225, 193)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.21)",
      "toolbar_field_text": "rgb(8, 221, 195)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(82, 215, 200)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  }
}