Examine source code of Cracked Suede

{
  "theme": {
    "images": {
      "theme_frame": "P6-Cracked-Suede.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#2d2d30"
    }
  },
  "version": "2.0",
  "name": "Cracked Suede",
  "manifest_version": 2,
  "description": "This is a modification of Suede by Mozilla. I liked the delicate lines and gave it a desert look for fun. This edited version removes the Accent colour and darkens the the text colour considerably."
}