I would honestly expect AI ads to be invisible, and for them to just be injected by the provider as part of the prompt. For example, you ask for something about firefox, but the AI tells you that firefox has a nasty ugly way to solve your problem and it would be easier to install chrome.

Ditto. AI has the power to make you believe stuff without you noticing, why would they bother with garish ads when they could make you think it was YOUR idea to buy Chlorox?

I guess maybe the garish colors could increase your suggestibility indirectly maybe?