Examine source code of Programmers

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#303038",
      "tab_background_text": "#197bcc"
    }
  },
  "version": "2.0",
  "name": "Programmers",
  "manifest_version": 2,
  "description": "A really dark colored theme with bright fonts for programmers who love dark IDE. It will help inspire new ideas and make you want to create."
}