Red
Red and yellow are the two most widely used colours on the flag. Though blue is also a colour, though not used as much.
All you have to do is look at the U.S. flag. Red, White, and Blue.
The flag that was used as the basis of the design of Alabama's flag was the flag of Scotland. The design was the same with just a few modifications like the color.
white
red
WHITE
black
Red,orange and black (even though black isn't accualy a colour) because it is on their flag.
There are about 192 national flags in the world. Of those flags, the most commonly used color found on seventy-four percent of the flags is red, followed by white on seventy-one percent and blue on fifty percent.
blue because most of the world is ocean
No one specific color is ''sacred'', however the color most often associated with Muslims is green, because the Ottomans, who used it in their flag, were primarily Muslim.
Yellow