How to change ContextActions MenuItem color?

Hello,
I have this XAML:
<ViewCell.ContextActions>
< MenuItem Text="Löschen" Command="{Binding RemoveUserTimerCommand}" IsDestructive="True"/>
< MenuItem Text="Sync" Command="{Binding SyncUserTimerCommand}" />
</ViewCell.ContextActions>
How do I change the "Sync" item background from grey to blue in iOS?
Can it be done with StyleId? If yes, how and where?