Yes, I painted hardwood flooring. It was nice, but had some pet stains. I thought it might be easier than sanding. It was hard work, but it did come out nice. After looking at the samples at the hardware store, it looks like 'tigerwood' which runs about $8.00 a square foot. I did 2 rooms for approximate total cost of $200.00.
I did a light sanding, applied basecoat then used a glazing technique. I applied 3 coats of Varathane for durability. I let each coat dry for 24 hours.
before...the floor was previously painted...hence why i decided to paint instead of sanding : ) plus...i HATE to sand things.
during (this is actually in the 2nd room - forgot to take action pic the first time). This process is really hard on the knees. If you tackle this, get a nice cushion. I ended up getting a garden stool with wheels : )