Examine source code of M2E basic test theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#693939",
      "tab_background_text": "#fa0808"
    }
  },
  "version": "2.0",
  "name": "M2E basic test theme",
  "manifest_version": 2,
  "description": "Good Persona, install and enjoy :D"
}