<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
<ms fontsize="14pt">boy</ms>
<mo color="black">+</mo>
<mstyle fontsize="24pt" color="GREEN">
<ms>girl</ms>
<mo color="red">+</mo>
<ms color="red">apple</ms>
</mstyle>
<mo>+</mo>
<ms>fig</ms>
</mrow>
</math>
Author: Robert Miner and Jeff Schaefer, Geometry Technologies