Different parts are made of different rocks. Perhaps you mean its apparent colour from Earth? Variations in this are caused by atmospheric effects such as dust.
grey and white
In the my moon tutorials.
Some people think letters have particular colors because they have a condition called Synesthesia. A synesthete's brain tends to associate certain letters with colors.
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No but it looks like it does
The Moon has no special name in particular months.
NASA has said they think the flags colors on the moon are now white after years of harsh conditions.
It depends on the particular planet.
They have no preference to particular colors.
Nothing in particular "happens".
Most professional teams have registered trademarks for their names and colors (for that particular use) as well.
A blue moon appears once every two or three years. It is an astronomical phenomenon where the moon actually colors blue. This is why it is called a 'blue moon'.