Examine source code of GamaGrey

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "GamaGreyTwo",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(123, 133, 142)",
      "toolbar_text": "rgb(30, 30, 30)",
      "frame": "rgb(77, 88, 96)",
      "tab_background_text": "rgb(195, 195, 195)",
      "toolbar_field": "rgba(160, 167, 172, 0.77)",
      "toolbar_field_text": "rgb(33, 33, 33)",
      "tab_line": "rgb(0, 165, 255)",
      "popup": "rgb(160, 167, 172)",
      "popup_text": "rgb(24, 24, 24)",
      "tab_loading": "rgb(0, 165, 255)"
    }
  }
}