There are some nice paneling options out there, but if you're looking for painted wood to cover a wall, mostly what you're going to find is siding, which is usually horizontal. There are one or two vertical siding options that I occasionally use indoors, but they're really designed as barn covering, and the boards are pretty wide. I'm looking for a narrower sort of pattern, such as you might find on a rural screen porch or something like that. Shabby chic?
Even if it were just vertical beadboard wainscoting, painted the same as the wall above it... I'd accept that as well (e.g. Doc Martin's office in photo). Something in a variety of colors. Did Honeywell make what I'm describing? If so, I'm afraid I must've missed it amongst the hundreds of other excellent pieces of cc from that creator; please point the way if that's the case.

>EDIT< OKAY. I looked at Honeywell's interior wall makeover, and there's some good beadboard paneling. But it seems to have a wide white header, which is an interesting look, but perhaps too fancy for what I need. So if anyone has alternative suggestions, I'm all ears.

Thanks!

@chitownriverscum, hello! Your description reminded me of these, the plain ones without painted borders aren't really pictured

Cool, I'll try them out. Thanks much!

Shasta - on the website, the walls look great. However, possibly the dimensions are slightly non-standard? I'm on a MacBook, which according to what I've read displays walls that aren't exactly 256x512 px as just plain gray.
Apologies for the bad screenshot - my laptop is also elderly, and won't post screenshots on MTS, so I have to do it from my phone. I'm not saying the walls need resizing; I'm just saying they're not going to work for me, unfortunately. I've learned to accept the limitations of Mac play.
The Honeywell wall is displayed at left for comparison.

I don't know if these will work on a mac, but they are quite nice, 3rd wall from top of page:

https://poppet-sims.tumblr.com/tagged/dl%20walls

@chitownriverscum, sorry I forgot you were on a mac! I just shared mac-friendly versions here

@Justpetro, the otherside walls are so pretty, I always love Poppet's colors

Hey, that's great! Thanks much to everyone for the help!