Examine source code of Minimalist Matrix Code

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#167d14",
      "tab_background_text": "#19cf3b"
    }
  },
  "version": "2.0",
  "name": "Minimalist Matrix Code",
  "manifest_version": 2,
  "description": "the other Matrix personas I saw kept invading my space to the left, making it hard to read text.  Here is my attempt at solving that problem."
}