If we're instering code into an "About Me" page on an auction site, then there is little chance we'll have access to the HEAD tags. So instead, the sensible option is to include STYLE tags within the HTML.
In answer to the above question, this should ideally go at the start of the HTML:
<***style>
p.orange
{
color: orange;
}
<***/style>
then, the relevant paragraphs will be like this:
<p class='orange'>
This paragraph is orange.
</p>
NB: delete the asterisks (*) in the above example. They are required in order to bypass this forum's anti-script filter.
