Set the background to orange and add a ; at the end.

<html> <body> <h2 style="font-family: Impact; color:orange;">UV Protection Chart</h2> <p style="background-color:red;"> Extreme: wear sunscreen, sunglasses, a hat and look for shade.</p> <p style="background-color: orange;">Medium: wear sunscreen, sunglasses, and a hat.</p> <p>Low: wear sunscreen and sunglasses.</p> </body> </html>]]>

Make sure to type orange;.