Examine source code of Abstract45

{
  "theme": {
    "images": {
      "theme_frame": "abstract45.jpg"
    },
    "colors": {
      "frame": "#7d7373",
      "tab_background_text": "#120505"
    }
  },
  "version": "2.0",
  "name": "Abstract45",
  "manifest_version": 2,
  "description": "Playing with brushes in Photoshop 7 with smoke, cracks and sparklies brushes. This looks like stained glass to me."
}