Examine source code of BM Minimalist Blue

{
  "theme": {
    "images": {
      "theme_frame": "header-blue.png"
    },
    "colors": {
      "frame": "#e4eef2",
      "tab_background_text": "#0a2b3f"
    }
  },
  "version": "2.0",
  "name": "BM Minimalist Blue",
  "manifest_version": 2,
  "description": "I decided to make a recolor of the original theme (BM Minimalist Redo). This time, it's a blue version."
}