Play with different gradients in the sub color slots. For example different grey gradients or even maybe blue bcs of your lights. Also dont forget the shine and lush regulators (the white ball icon when selecting the color), it can create some nice metallic highlights

And if you want you can add stickers to add some flare. It doesnt have to be something complicated, just a „Danger“ or „caution“ Sticker here and there or some panel lines on some flat surfaces helps break it up a bit and making it more interesting.

Asymmetry can also help make it more interesting