Mark Updegraff Sounds like a great location, vibrant!

We've done about a dozen SFH's for rental and have standardized on just about everything, some examples: Formica counter tops (always the same color/style), the same RTA kitchen cabinets, inexpensive tile (from HD or Lowes) in kitchens, baths and sometimes hallways, NEVER carpet anywhere instead we go with hardwoods or laminate, use the same paint color on all walls and trim, the same replacement windows (when needed),builders/contractors lights (from HD or Lowes) ...the list goes on and on.

You can add a vending machine, laundry facility, customize interior colors different than the apts around you, etc.

I like your color selections.

They were always late, had dogs, chickens, painted rooms absurd colors, and got paint everywhere. 

Lots of colorful responses, thanks BP community! 

For this list we have been doing professionally typed business letters with our company name, put inside a invitation style envelope (off yellow color) and hand wrote the address with red ink, we also added an urgent stamp as well!

It seems like a serious concern, though the counter may be that estimating returns in the stock market (or even most businesses) is also just speculation with educated and/or rose-colored guesses.  

I've read some mixed reviews about Allure flooring in rentals based on color.

You'll have to shop around, as there are plenty of options online that come with all sort of different designs, colors etc.