Examine source code of KelpYellow

{
  "name": "KelpYellow",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "KelpYellow.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(50, 90, 20, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ffe4432a-3e28-4c9f-9e8d-ef58f3f001c1}"
    }
  }
}