Style select1 appearance=full label color to red

I have the code below.  I want to be able to style the label Yes to be the color red.  I have tried a few different methods but none seem to work.  Any ideas?

 <xforms:select1 ref="cooking/three/choice" appearance="full">
                                                    <xforms:choices>
                                                     <xforms:item><xforms:label>Yes</xforms:label><xforms:value>1</xforms:value></xforms:item>
                                                    <xforms:item><xforms:label>No</xforms:label><xforms:value>0</xforms:value></xforms:item>
                                                    </xforms:choices>
                                                   
                                                </xforms:select1>

Regards,

John Bampton.

Anyone got any ideas?