The Western U.S. Flag

The southern U.S. sometimes uses the Confederate flag as it's unofficial regional flag, although there is a movement against it. Why doesn't the western U.S. have it's own unofficial regional flag?

The U.S. flag consists of a field of fifty stars, one for each of the fifty states, and thirteen alternating red and white stripes, one for each of the original thirteen states. But all of these original states are in the eastern U.S. The capital, Washington DC, is also in the east. This means that the flag very much favors the eastern part of the country, although it is true that the history of the country began in the east.

The field of fifty stars, in contrast, represents every state equally. The West is generally drier than the east, meaning less cloudy, so that the stars are more visible. Why doesn't the western U.S. adopt just the field of stars on the flag as it's unofficial regional flag? Image from the Wikipedia article "Flag of the United States".

The posting about the western U.S. is "The Would-Have-Been Nation Of Westland", July 2017.