Examine source code of Button Grid Darkness II

{
  "theme": {
    "images": {
      "theme_frame": "buton_grid_darkness1.jpg"
    },
    "colors": {
      "frame": "#04030f",
      "tab_background_text": "#ece6f7"
    }
  },
  "version": "2.0",
  "name": "Button Grid Darkness II",
  "manifest_version": 2,
  "description": "Dark dimpled surface hopefully this time with better text contrasting ( you can't preview these before you submit them unfortunately so you have to guess)"
}