Examine source code of !soft!

{
  "name": "!soft!",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "57798ed7d2b28745aaca78d090f592ee.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 158, 158, 1)",
      "toolbar": "rgba(255, 229, 229, 1)",
      "bookmark_text": "rgba(252, 159, 159, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(252, 159, 159, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f6d8695d-43c5-4a57-9de0-77937724cdaa}"
    }
  }
}