Examine source code of Wavelengths

{
  "name": "Wavelengths",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "wavelenghth.jpg"
    },
    "colors": {
      "frame": "#9acee3",
      "tab_background_text": "rgba(26, 112, 0, 1)",
      "toolbar": "rgba(194, 194, 194, 0.18)",
      "bookmark_text": "rgba(0, 96, 115, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(56, 56, 56, 1)"
    }
  }
}