How to change the color and placement of two Labels side by side in XAML?

    <Label>
            <Label.FormattedText>
                <FormattedString>
                    <Span Text="R$"
                          FontAttributes="Bold"
                          FontSize="Large"/>
                    <Span x:Name="CalculoParcial"
                          FontAttributes="Bold"
                          FontSize="Large"/>
                </FormattedString>
            </Label.FormattedText>
        </Label>