Examine source code of lightBlue-spring

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "lightBlue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(244, 244, 244)",
      "toolbar_text": "rgb(15, 62, 91)",
      "frame": "rgb(212, 212, 212)",
      "tab_background_text": "rgb(18, 18, 18)",
      "toolbar_field": "rgb(170, 222, 255)",
      "toolbar_field_text": "rgb(0, 27, 45)",
      "tab_line": "rgb(38, 169, 255)",
      "popup": "rgb(244, 244, 244)",
      "popup_text": "rgb(18, 18, 18)",
      "icons": "rgb(22, 83, 124)",
      "ntp_background": "rgb(244, 244, 244)",
      "popup_highlight_text": "rgb(32, 118, 176)",
      "tab_loading": "rgb(38, 169, 255)"
    }
  }
}