Examine source code of Modest Mouse Blue

{
  "theme": {
    "images": {
      "theme_frame": "Persona.png"
    },
    "colors": {
      "frame": "#545454",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Modest Mouse Blue",
  "manifest_version": 2,
  "description": "It's a really simple Modest Mouse theme. The balloon and anchor from the album art for \"We Were Dead Before the Ship Even Sank,\" mixed with the dominant blue from that same art."
}