Examine source code of Believe You Can

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0d0c0c",
      "tab_background_text": "#66e0ff"
    }
  },
  "version": "2.0",
  "name": "Believe You Can",
  "manifest_version": 2,
  "description": "Have something on your mind, something you're not sure you can do by yourself ? Just <i>Believe You Can</i>...and you will. It's really that easy! \n<b>Believe In ...</b> <i>Strength in Mind, Strength in Soul, Strength in Yourself!</i>"
}