Examine source code of Evening SkyBow

{
  "theme": {
    "images": {
      "theme_frame": "Apr0711_Thur_PMSkyBow.png"
    },
    "colors": {
      "frame": "#4d649e",
      "tab_background_text": "#ccccff"
    }
  },
  "version": "2.0",
  "name": "Evening SkyBow",
  "manifest_version": 2,
  "description": "These 2 Morning and Evening SkyBows fit well on Firefox 3 or 4.  I was experimenting with Firefox 4's tab system when I made them. Rich colors that are deeper than pastels seems to work well with the dark tabs that we have been given, but I have a lot of experimenting left to do. I am very happy with the way these turned out & I think you will be too. (rainbows, red, pink, orange, yellow, green, blue violet, indigo, purple, dark, dusk,  twilight, evening, nighttime, daylight, bright, vivid) c0l1\n\nAn original Abstract Persona by CollieSmile."
}