Perception of color is an incredibly complicated process involving varying sources of light and human physiology. Our eyes, nerves, brain and add to that the emotional experiential filter that we run every stimulation through determines our reaction to color.
I am intrigued and amused when people come to me and express anger at a painter, paint store clerk or design specialist because they don't like the color they chose or were lead to put on a wall. They act as if they were victimized by the person trying to help them with a very subjective personal choice. First of all no one else will have the emotional investment that you have in your project because we are all pretty selfish by nature. Sometimes it is advantageous to ask someone without an emotional investment to get a commonly accepted and non-controversial color choice. Selling a house comes to mind. All realtors will have a favorite off white color that they swear will sell your house hours after it is listed. I have some suggestions and a process that has worked well for me.
One of the problems in the paint industry is that in order to offer many color choices paint companies have to rely on a printer to print small paper color swatches for the customers to take home and look at. This is the best the industry can offer and keep a can of paint affordable. Most companies will offer a small sample of actual paint. I suggest once you determine that maybe ( "maybe" is the key word) you have found a color you like purchase the smallest container the paint company offers and go home and put a 3' square on the wall in every room you are going to paint. Then live with it for a couple of days watching the color as the daylight and room light changes. It will surprise you how different the color will look as the light changes. It is important to keep in mind the other environmental factors that will play off of the color such as flooring, furniture and trim. This doesn't guarantee that once the entire project is painted you will be happy with the color because we perceive that color intensifies once we surround ourselves with it. However this will give you a pretty good idea. It is important if you don't like your color sample that you constructively criticize it. Determine if it is "too red" or "too light" so that you can make a more accurate adjustment in your choice. Keep in mind that getting the right color may be a process. Ask for help and opinions but ultimately own your choice. Nobody else can make us happy, right?
In closing I just want to say I hope all of your color choices are satisfying. As always I hope this helps.
Knowledge is power - Jay Adirondack Painting