Hello @ColleenM02 ,
You can definitely still use our product, even if the particular hexcodes for the colors, or something else when we try to pull the site's elements, is causing the error. You'd just go about building your campaign (email, landing page, etc.), selecting the colors manually, and saving.
If you'd like a quick-reference to various guides for getting started, I'd recommend checking out this thread in our Community. If you're specifically wanting more guidance on getting started with emails, you can reference this thread.
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