setSwapLegacyColors method
Implementation
void setSwapLegacyColors(bool? value, [bool notify = true]) {
if (value == null) return;
if (value == _swapLegacyColors) return;
_swapLegacyColors = value;
if (notify) notifyListeners();
unawaited(_themeService.save(Store.keySwapLegacyColors, value));
}