app-flutter/assets/themes/default.json

{
  "dark": {
    "background": "#000000",
    "foreground": "#FFFFFF",
    "subdued": "#808080",
    "accent": "#5EC8F2",
    "good": "#6CCB5F",
    "caution": "#FFC107",
    "alarm": "#FF5555"
  },
  "bright": {
    "background": "#F0F0F0",
    "foreground": "#1A1A1A",
    "subdued": "#606060",
    "accent": "#0277BD",
    "good": "#2E7D32",
    "caution": "#8D6E00",
    "alarm": "#CC0000"
  }
}