Perhaps wall mounted picture lighting. Where you could aim it at the back wall.

https://www.homedepot.com/p/Arezzo-1-Light-Matte-Nickel-Wall-Ceiling-Light-87328A/203019408?MERCH=REC--PIPHorizontal1_rr--203194882--203019408--N

I'd add a directional can light with a diffuser lens.

katinparadise, maybe you can go install it as it's a great idea.... no comments from the OP since last Monday :)

I would Porter but I still have the faucet in my master bath to finish installing!

Maybe this LED spotlight from Eglo will help you

Thanks everyone! I did not get any emails and assumed the thread was dead. I really like the light suggested by katinparadise