Button - problem with hover text color

 <telerik:RadButton Grid.Row="4" Grid.Column ="0" Text="Login" HorizontalOptions="CenterAndExpand" VerticalOptions="Center" Clicked="OnLoginClicked"/>

<Color x:Key="PrimaryColor">#03446a</Color>
            <Color x:Key="SecondaryColor">White</Color>

 <Style TargetType="telerik:RadButton">
                <Setter Property="TextColor" Value="{DynamicResource SecondaryColor}" />
                <Setter Property="FontFamily" Value="OpenSansRegular" />
                <Setter Property="BackgroundColor" Value="{DynamicResource PrimaryColor}" />
                <Setter Property="Padding" Value="14,10" />
             </Style>