Things like not liking the color of the tile or paint isn't required repairs.... take those things in stride, listen, but not deal killers.  

If i have to write over them to darken the colors again then oh well.

Tell them all to color outside the lines and take a hacksaw to the break pedal.Franklin

What colors is it?

I started buying SFR properties lately (mostly foreclosed properties) in Wilkes-Barre PA, a blue color area.

I hope it’s colorful.

Nice color on the walls, David.

Replacing a 3 tab shingle with a architectural shingle and ship lap wooden siding with more decorative and colorful fiber cement boards, I would think should be considered improvements.  

Certainly address the mechanicals, you will need to comply with HUD guidelines for health and safety and after that, it is up to you. the following basic materials are for you to consider when completing your renovation, while considering the future implications of tenant turn-over:*FlooringNO CarpetTile wet areas if this in your budget or simply install a resilient Rubberized Vinyl Floor plank systemGeneral areas - either refinish hardwood if existing or a new resilient tongue & groove laminate flooring*PaintStandardize the paint color throughout the entire interior, do not get fancy with painting different rooms different color, just more of a headache to deal with at each tenant turnover*ElectricalUpdated electrical schedule, new outlets and switches you want everything to be nice and bright, you want the wow factor no matter the area or rents, you want everything to be clean and look appealingNew Lighting schedule - consider using LED - it is brighter (better presentation) - more energy efficient and should be a smaller maintenance burned over time.

Showing my newbie colors here.