Examine source code of FTIsland

{
  "name": "FTIsland",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "FT_Island_II_by_iwanttobekorean_large.jpg"
    },
    "colors": {
      "toolbar": "rgba(227, 209, 209, 1)",
      "toolbar_field": "rgba(219, 197, 197, 1)",
      "toolbar_field_text": "rgba(209, 125, 125, 1)",
      "frame": "rgba(227, 209, 209, 1)",
      "tab_background_text": "rgba(227, 209, 209, 1)",
      "bookmark_text": "rgba(212, 159, 159, 1)"
    }
  }
}