@Dharkstare I feel ya. I have always built my own PCs and find it frustrating that it's often harder or more expensive now to get parts/gear that is RGB free. I don't need a light show!
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Gaming aesthetic is usually aimed at a younger audience so you end up with a lightshow. Just get a windowless case and make sure your peripherals have the option to turn the RGB off.
For what it's worth, I would HIGHLY recommend not shopping on Newegg. A decade ago, they were the gold standard. Since then, they got bought out, and the new owners have gutted the customer support system.
Microcenter is what you're looking for, whether you want to shop online or in-store. Although, if you don't have a physical store near you, I dunno if you might have to pay more for shipping or anything.
The neat part about modern RGB is that it's fully customizable- and you can turn it off. I set up OpenRGB profiles so that I can turn all the lights in my computer either off completely, or on to preset color schemes with one click of a button.
In reality RGB is just a super cheap feature to add that is a bit of a flashy upsell, which is why almost every gaming manufacturer adds it. You are under no obligation to use it.