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<!DOCTYPE html>
<html>
<body>
<select size="7">
<optgroup id="ogone" label="opt group 1" style="color:green" disabled="disabled">
<option id="one" style="color:green">Should be no red</option>
<option id="two" style="color:green">Should be no red</option>
</optgroup>
<optgroup id="ogtwo" label="opt group 2" style="color:blue">
<option id=three style="color:blue">Should be no red</option>
<option id=four style="color:blue">Should be no red</option>
</optgroup>
</select>
</body>
</html>