I used to let tenants paint if they asked first, the color was agreeable, and they agreed to repaint it upon move-out. 

In 6 months they broke 3 light fixtures - I had reports their kids were spraying a garden hose from the outside of the house into the kitchen, broke a large kitchen cabinet door, broke several plastic pieces of a new higher end Fridge, fist sized hole in the wall, carpet stains and the entire house may need another repaint, damaged woodwork, scratched kitchen cabinets, stole the curtain rods, curtains my wife spent a lot of time picking out stolen, destroyed the back yard - let the weeds grow several feet tall in the flower beds etc.  

Plus, if we lost a tenant we were struggling to recapture, repaint and whatever else we had to do to find a new tenant. 

My husband and his friend re-painted one room and touched up a couple others when we thought we would just re-rent it.So if you read all that you're a champ. 

Look for properties that look like they need to be repainted, have long grass, clogged gutters, other deferred maintenance, and knock on the door. 

If it is just paint, you'd be better off leaving it until she's gone and making sure you have enough to re-paint. 

Did a kitchen rehab by repainting the cabinets, adding new countertop, new backsplash and new appliances, new fixtures.

Even when they do pay lower income people tend to treat rentals poorly and you have higher turnover costs, re-painting, flooring, etc. 

I own a 3 Flat property on Chicago's Near West Side and I am planning on increasing rent in the following manner:(Rent increase is due to market rents and a hike in property tax)3bd/2ba, 1,150 sq ft ApartmentCurrent $1,150Market $1,500+Renewal $1,350I am being gentle as I prefer to receive $1,500 but flipping the unit could cost more due cleaning and repaint costs (20+ft ceiling).

We had a rental outside of Philadelphia who had the same type of tenant (refusing to pay, more people living in that didn't, etc).Gave them a 24 hour verbal and written maintenance notice that we were Repainting /replacing the doors.