Examine source code of Red Dream

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#09161b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Red Dream",
  "manifest_version": 2,
  "description": "This is my first theme for Mozilla. I tried to create an abstract theme .I like dark colors so I tried to focus on my color choice . I hope you will appreciate my work.\nThank you."
}