Examine source code of After-Math(t18)

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c0c0c0",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "After-Math(t18)",
  "manifest_version": 2,
  "description": "I wanted to create a theme dedicated to Mathematics. I didn't want it to be to boring, so I came up with this combination of colors and math equations."
}