Examine source code of skill

{
  "name": "mahtem",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "IMAG0080.jpg"
    },
    "colors": {
      "frame": "rgba(7, 49, 138, 1)",
      "tab_background_text": "rgba(38, 204, 80, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(255, 231, 15, 1)",
      "toolbar_field": "rgba(229, 232, 30, 1)",
      "toolbar_field_text": "rgba(252, 33, 153, 1)"
    }
  }
}