Examine source code of Test theme 7.0

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#7f8725",
      "tab_background_text": "#90eb9f"
    }
  },
  "version": "2.0",
  "name": "Test theme 7.0",
  "manifest_version": 2,
  "description": "this is just a test theme made with windows paint. Download if you like!"
}