The horse symbolizes perseverance, achievement, loyalty, victory, power, freedom, speed, and also a success-all great attributes to hasten your goal to climb up the corporate ladder or get your business roaring. At work, you are constantly faced with the performance issue, display horses near your working desk. This results in the rapid growth and fast harvesting of creative ideas. Horses running forward means that you can do business without any difficulty. When displayed in the home or office, it brings a triumph, victory, strength, and success. Colors, number of horses and a direction is very important when horse painting is used for home decor or Vastu Shastra (even feng shui) corrections. A large wall canvas painting of brown and dark colored horses are more impressive, attractive and, also energetic according to the Vastu Shastra.
I agree with JHs. If there is no new color on it at all, just talk to the painter about it, if it was an honest mistake (which can happen very easily while painting) your painter should have no problem fixing it. However, in my years of experience, it is not unusual for 2 coats of door paint (good quality) not to cover very well at all. I once painted a red door 7 times, plus a tinted prime coat before I found the door to be a solid color.