Examine source code of Cyber Spring

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cyber Spring",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(137, 231, 225)",
      "toolbar_text": "rgb(32, 62, 72)",
      "frame": "rgb(122, 217, 206)",
      "tab_background_text": "rgb(2, 27, 27)",
      "toolbar_field": "rgba(213, 227, 230, 0.53)",
      "toolbar_field_text": "rgb(44, 79, 92)",
      "tab_line": "rgb(215, 175, 175)",
      "popup": "rgb(231, 242, 244)",
      "popup_text": "rgb(44, 79, 92)",
      "tab_loading": "rgb(215, 175, 175)"
    }
  }
}