Examine source code of Stitch Love

{
  "name": "stitch",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "imagwwes.jpg"
    },
    "colors": {
      "frame": "rgba(24, 68, 171, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(38, 29, 79, 0.3)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0b37cfc-efca-49f4-b5ff-715e62bf586d}"
    }
  }
}