funny cos kirby can't talk like that.

(Continued)

The grey background is also a concave shape, to demonstrate how Speedede is running into Readede's calm bubble and piercing it.

Feedede is green, a visual tie to money. His background is blue, a calm color, and is wider on the bottom. This gives him the impression of a strong base, like a mountain, helping demonstrate his unflinching resolve to get the fee paid.
By contrast, Greedede's background is red (an aggressive, high-energy color) and is wider on the top. This top-heavy imagery and aggressive color helps support his action of trying to overwhelm Feedede by force. Greedede himself is yellow to give him visual ties to his pile of treasure, furthering the sense of how important his belongings are to him (hence, greed) while still using a color that is tied to wealth.

(Continued)

(Continued)
Shedede is pink, a color associated with femininity. As the only leading lady, it's her distinction. Her background is purple to show her combination of confusion and slight fear of Miidede.
Miidede is modeled after Dedede, so his color doesn't mean much for him. His background, a combination of green and black, is often used in representations of evil, danger, and the unknown, furthering his black-sheep status among the group.

In conclusion, using color and shape can enforce the ideas present in a comic, even if the backgrounds are as decidedly simple as they are in this comic.
Thanks for reading, I hope this helps you in some way!

This is funny! Nice job! XD

Hehe, Miis are the scariest xD

Wooww, who knew that coloring was so scientific xD Well, thanks for pointing it out.

if u wanna go by kirby's series "Kirby:Right Back at Ya" Waddledoo wouldve been a good idea being the only who can talk.

@heroine-of-winds

@puppyunity64
Ty for tagging me (^ ^