My best guess as to what the colors are supposed to be is the Sticks & Stones sign in New Hage. Although even then the Sticks & Stones text is green white red while the sticks and stones symbols are red green red. Regarding the constellations, if the button itself isn’t showing a constellation then the only two times anything overtly or even somewhat related to the night sky would be during the Forbidden Fruit scene and the Wall Vines game over.