Knowledge is the way out of every ugly situation in life. When you know what to do, you are likely to have enough room to handle the situation. In the area of choosing the appropriate colors for your suits here are the basic guidelines that can be very helpful:

Desire to learn the way
The first point to bear in mind to discover the color combination is to have a thirst for it. You must have a burning desire to learn the rigors involved. Hence, you need to align your mind properly and tune it well to get ready to discover how to go about combing the right colors.

build your sense of colors
The next thing to do is to have a working knowledge of the colors. You need to build your color sense and engrave it inside your mind so that your common sense will always be at alert to pick the right color signals all the time. One way to do this is to painstakingly study about colors. For instance, it is a well known fact that black match white and vice versa.
Engage in a  fashion training color program
From time to time, so many fashion institutes engage the public in a free for all show on issues concerning fashion especially when it comes to color combination. Do well to be attending such shows when they are staged.

Basic color combination to avoid
Never wear an upper black coat on top of yellow, green, purple or blue trousers. These are never allowed unless you are very insane.

In all, the best way is to keep on learning. Never stop that till you finish your course on the earth.