Examine source code of Natalia Tena Grey Theme

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#787777",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Natalia Tena Grey Theme",
  "manifest_version": 2,
  "description": "Nat is known for her role in the Harry Potter films as Nymphadora Tonks. She is in a band called Molotov Jukebox and plays the Accordion."
}