Examine source code of Dimension Blue

{
  "theme": {
    "images": {
      "theme_frame": "Dimension_Blue.jpg"
    },
    "colors": {
      "frame": "#2828db",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Dimension Blue",
  "manifest_version": 2,
  "description": "I took a screen shot of my Firefox browser at 1600 pixels wide with a white background in the header.  This allowed me to see where each line of the header was divided.  I then used a rectangle tool to create rectangles within each line of the header.  Then I used Folds gradient (Fireworks CS3) to create the gradient colors in each line."
}