isCustomTheme property
Returns true if the currently active theme is a custom theme.
A custom theme is any theme that is not the built-in 'light' or 'dark' theme.
Example:
if (Themed.isCustomTheme) {
print('A custom theme is active: ${Themed.currentThemeName}');
}
Implementation
static bool get isCustomTheme =>
_instance._currentThemeName != 'light' &&
_instance._currentThemeName != 'dark';