Figured this would be useful for future reference. Milkyway has no "set" patterns for their galaxy coat, these are just generic patterns for ease of drawing. They can be drawn with any pattern imaginable with as many or as little stars!

There is usually one star in the coat that is the brightest, usually found on the rump or head.
The bandanna is not optional, she will never take it off.
The purple is blended into her galaxy pattern.
Their galaxy is not limited to blue/purple, any other colours can be blended in. There's no limit to the colours.

Daylight pattern- When the sun is out, the galaxy is not visible. Their head ring always is visible.

Standard pattern- The most common pattern Milkyway is seen with, they don't know why this happens so often.

Umbreon pattern- Milkyway figures the universe knows their species and gives them a "normalish" coat sometimes. Who are they to question the universe?

Galaxy pattern- Swirly pattern that makes Milkyway feel closest to their namesake.