I would give her a little choice in colors but nothing that would make it difficult to sell if she doesn't close.

Linoleum tile that is solid color is hard to ruin and I have it in 3 of my rentals and it survives.

it's also color coded, so you get kind of a bird's-eye view of GENERAL trends in the dfw area.

Foundation depending on severity can be around $5k, new 20 yr simple roof for about $5k and a new AC unit with brand new duct work from $4-5k.

At a house inspection I found out that the installer of a packaged HVAC unit removed almost all of a foundation column in the crawlspace to rout the flex air duct from the unit.

The Fair Housing act states that it is unlawful to refuse to rent to a person because of that person's race, color, religion, sex, handicap, familial status, or national origin so I think you should be good.

Yes, I know what they can be, want insulation in that 9'6" space above you, room for duct work, plumbing, electrical chase, it will close in quickly......but yes, it can be done.

Is there a special paint, any recommendations on colors, sheen, or cost effective alternatives?

Usually each type will have it's own color: orange for cable, red for elec, blue for water, etc.

Added a pop of color and really draws your eye.