Sigh... there's so much wrong with your reasoning I don't know where to begin.
No, they don't look similar. Do they look like 2 black people? Clementine is a little ambiguous but if you've ya know...read the tread you'll see that black people occupy a wide range of shades and looks.
He'll I'm 100% black and I get confused for Hispanic and sometimes Arabic when I grow my facial hair out. There's just so much wrong with thinking a character design is bad because their race isn't instantly recognizable. I just... ducking flabbergasted over here.
Then the game's art style doesn't show these subtle nuances.
She doesn't have any facial features that remotely resemble an african american.
No her eyes, nose , hair....just nothing.
When I saw her I immediately registered her as asian for the entire first season.
These hodge twins are easily recognizable as African american despite their light toned skin.Look at their noses, their lips and the musculature of their faces.
Celementine is poorly designed if the devs had an attended a particular race for her.Not that it matters in the context of the story.