Examine source code of VividLightBeams

{
  "theme": {
    "images": {
      "theme_frame": "Mozilla_Persona_VividLight_Header.jpg"
    },
    "colors": {
      "frame": "#0cb5e8",
      "tab_background_text": "#6e2df0"
    }
  },
  "version": "2.0",
  "name": "VividLightBeams",
  "manifest_version": 2,
  "description": "Just having some fun with photoshop, I love making abstract images like this with bright colours."
}