Examine source code of Starlight Trails

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Starlight Trails",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(10, 31, 83)",
      "toolbar_text": "rgb(67, 194, 218)",
      "frame": "rgb(15, 44, 88)",
      "tab_background_text": "rgb(24, 156, 180)",
      "toolbar_field": "rgb(38, 106, 171)",
      "toolbar_field_text": "rgb(183, 225, 244)",
      "tab_line": "rgb(113, 181, 240)",
      "popup": "rgb(2, 63, 108)",
      "popup_text": "rgb(68, 162, 225)",
      "tab_selected": "rgb(16, 86, 148)",
      "tab_text": "rgb(129, 207, 226)",
      "toolbar_bottom_separator": "rgb(36, 129, 210)",
      "toolbar_field_border": "rgb(37, 129, 210)",
      "toolbar_field_highlight": "rgb(129, 178, 226)",
      "tab_loading": "rgb(113, 181, 240)"
    }
  }
}