Examine source code of gruvbox light

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#fbf1c7",
      "tab_background_text": "#3c3836"
    }
  },
  "version": "2.0",
  "name": "gruvbox light",
  "manifest_version": 2,
  "description": "Unofficial companion firefox theme for the gruvbox light color scheme made by Pavel Pertsev."
}