Examine source code of Devil May Cry Sign

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f08bcd",
      "tab_background_text": "#de2c85"
    }
  },
  "version": "2.0",
  "name": "Devil May Cry Sign",
  "manifest_version": 2,
  "description": "The sign of devil may cry \n====\ni do not own anything from Capcom! this is strictly for fun in NO way am I making a profit off this!"
}