How can I create a Tiger Striped Collection List

I would like to create a “tiger-striped” collection list where each row alternates color between black and dark gray. I don’t see how I can do this. It’s easy in basic CSS with:

li { background: green; }
li:nth-child(odd) { background: red; }

Here is my site Read-Only: LINK
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@Marcus_Reed you can always inject custom code but there’s a pretty easy way to do this. Just create two classes, each with their own background color, and apply them alternating to each list item.
Like this:
image . If you’re using a rich text field, I’d say you’d have to use the custom code option