If you don't mind me asking, what gave you the idea to give moon yellow and blue eyes? I like it! It's cute! But I don't recall Moon ever being shown with anything other than red and black eyes.
Ooooo a very interesting question!!!!
There is actually some logic behind this
So. Most people draw moon with black scalera (eye whites) and red irises
Or one black scalera one white
Sometimes red with white irises. Just for the sake of personal design of Moon's regular eyes
I Like having a bit of asymmetry so I like one eye having black/white scalera and one having a color with a white iris. Idk that part is just personal taste to offset the darkside of his face
But as for the colors this is because of the depictions of Sun and Moon in the game
All based on their in game merch and posters
See. Its not exactly clear whether Sun's eyed were blue, grey/black, or gold originally but we know in game now his eyes are pure white
Moon is almost NEVER shown in posters and merch with his eyes open
EXCEPT for this one plushy render
This shows his regular eye as blue and his darkside eye as red but i feel like thatd be way to scary for children
So my headcanon is that sun and moon's eyes have a range of colors and options and the two just tend to choose whatever they go with
Moon would usually have both yellow eyes (he likes that since sun used to use blue for his eyes) But the eye on his darkside wont turn yellow for some reason. And he doesn't like parts and service so he goes with blue instead of having it repaired or replaced
And since his faceplate is so still he likes using his eyes to express how he feels
