Real wealth is having things you desire, which ultimately comes from hard work. But Vastu can help you invite more money and abundance into your life. Would you like to increase your wealth significantly with Vastu Shastra? Display a symbol that speaks to you of wealth. Beautiful painting of money can be placed to stimulate financial luck. My first billion, a very famous and popular painting can be displayed in the prosperity corner of your home or office. Believe it or not- wealthy people of far east have used arts, painting etc. (along with feng shui) to increase their wealth and success. It is a good idea to display a painting of multiple currencies when you are also in the business of export or having a foreign income.
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.