What does Iran's flag design mean?
The colors of green, white, and red are the traditional colors of Iran and of Islam which the country used under the previous government as well. There is also a red tulip in the center of the flag to represent the flowering of the Islamic Republic. In small white letters both above and bellow the white band it says "Allah hu Akbar" which means "God is the Greatest" and is another symbol of Iran's Islamic nature.
Perhaps you mean "copyright" or "trademark", since patents do not generally cover any decorative designs. If so, the answer is "yes", you may have a copyright or trademark that includes a national flag, in many countries, but you might be required to disclaim any exclusive right to the portion containing the flag, and your design must conform to any relevant laws regarding commercial use of the flag symbol.
Assuming you mean the US flag, as there is no such thing as the American flag. There is no "first" color. The colors are not ordered in any manner, and the design of the flag makes it impossible to list them in any meaningful manner. We refer to the colors as "red, white, and blue" out of tradition, not any specific ordering.