Examine source code of Macro Bubbles

{
  "theme": {
    "images": {
      "theme_frame": "ColorsBubbles_Hedder2.JPG"
    },
    "colors": {
      "frame": "#4aa5c9",
      "tab_background_text": "#e4b6ed"
    }
  },
  "version": "2.0",
  "name": "Macro Bubbles",
  "manifest_version": 2,
  "description": "This is a super macro shot of carbonated beverage in a small cup with lights behind it."
}