msubsup_colors

Combinations of mathcolor and mathbackground.

W3C sample	WIRIS
	$$X_a^b,X_a^b,X_a^b,X_a^b,X_a^b$$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mrow>
    <msubsup>
      <mi>X</mi>
      <mi>a</mi>
      <mi>b</mi>
    </msubsup>
    <mo>,</mo>
    <msubsup>
      <mi>X</mi>
      <mi mathcolor="#FF0000">a</mi>
      <mi mathcolor="#FF0000">b</mi>
    </msubsup>
    <mo>,</mo>
    <msubsup mathcolor="#FF0000">
      <mi>X</mi>
      <mi>a</mi>
      <mi>b</mi>
    </msubsup>
    <mo>,</mo>
    <msubsup>
      <mi>X</mi>
      <mi mathbackground="#80FF80">a</mi>
      <mi mathbackground="#80FF80">b</mi>
    </msubsup>
    <mo>,</mo>
    <msubsup mathbackground="#80FF80">
      <mi>X</mi>
      <mi>a</mi>
      <mi>b</mi>
    </msubsup>
  </mrow>
</math>

Author: Bruce Miller