custom themes will be randomized.

custom themes will be randomized. ， depending on your system theme. If set to 'custom'， the theme will be set to a random one. The random themes are not saved to your config. If set to 'favorite' only favorite themes will be randomized. If set to 'light' or 'dark'， respectively. If set to 'auto' dark or light themes are used， only presets with light or dark background colors will be randomized， After completing a test，。