Examine source code of Spring green 1

{
  "theme": {
    "images": {
      "theme_frame": "greenwaveFFH.jpg"
    },
    "colors": {
      "frame": "#666ccc",
      "tab_background_text": "#66cccc"
    }
  },
  "version": "2.0",
  "name": "Spring green 1",
  "manifest_version": 2,
  "description": "Light green accent - though sorry I'm not sure what 'accent colour' is (?) and couldn't download test for different environment - so I hope it works :o)"
}