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$\text{Theorem 1:}\text{Now is}\text{the time}\text{for}\text{MathML}$

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    <math> 
      <mrow> 
        <mtext color='#f05'> Theorem 1: </mtext> 
        <mtext fontweight='bold'> Now is </mtext> 
        <mtext fontstyle='italic'> the time 
        </mtext> 
        <mtext fontfamily='Helvetica'> for </mtext> 
        <mtext fontsize='10pt'> MathML </mtext> 
      </mrow> 
    </math>