Examine source code of clean-stripes

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "clean-stripes",
  "manifest_version": 2,
  "description": "This is a simple and clean theme. Test it out and let me know what you think :) \n\nAdditional details: font color is white."
}