Specifically, because my name is not typically associated with Black people, where my wife and I invest are not and because my speaking voice is neutral, I regularly receive a lot of enthusiasm about properties we wish to buy, sell or rent. 

Our current goal is to invest in something cash flow neutral, though not house hacking or STR.

It is not an improvement because the walls were a neutral grey color and now it's pink.

@Ethan G. can the seller sue the buyer for fraud if the appraiser is not neutral and is already acquainted with the buyer? 

However, I am more neutral on the selling than many of the posters.  

Decor is usually neutral and can feel clinical.

Then put new pad and carpet.If the urine is on the walls, you have to wash them down with a vinegar or odor-neutralizer, preferably one designed specifically for cat urine.If there is urine on the walls, keep in mind it can drip behind the baseboards so you may need to pull those off.I would start with a black light and see if you can narrow down the damaged area or if it's the entire home that requires treatment.

My advice is that if this is becoming an issue for you guys you need a qualified neutral party like an attorney for each of you to talk to who can represent both of you in the best way possible so you are both protected.

I am the queen of oops paint for rentals if it's a neutral color ($30 for 5 gal, at Lowes). 

I think it's not talked about much because of the misconceptions...one of which is that everything has to be plain Jane neutral to sell because homeowners are just going to change it anyway...that belief will get many investors into some real hot water.