Examine source code of Rainbow Splatter

{
  "theme": {
    "images": {
      "theme_frame": "Rnbowsplat-header.JPG"
    },
    "colors": {
      "frame": "#fa9200",
      "tab_background_text": "#fa9200"
    }
  },
  "version": "2.0",
  "name": "Rainbow Splatter",
  "manifest_version": 2,
  "description": "Multicoloured paint drops, on a black background."
}