Edit in JSFiddle

$('.red-button').click(function(){
    $('.info-box').css( 'background-color', '#FF8F87' );
});
$('.blue-button').click(function(){
    $('.info-box').css( 'background-color', '#6EB6FF' );
});

<p class="info-box">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Soluta iure officia explicabo corrupti iste suscipit laboriosam ipsam sapiente obcaecati maxime! Quisquam recusandae nemo sequi est veniam unde odit dicta dolorum.</p>
<button class="red-button">Red</button>
<button class="blue-button">Blue</button>

.info-box {
    background-color: #efefef; /* Light Gray */
    padding: 10px;
}