Translation of "Exterior" in Japanese

Bright red exterior ...

鮮やかな赤色をしています

We say that we judge people based on their contents, but in the ends, don't we just judge them based on their exterior?

中身で人を判断すると言うけれど、結局僕たちは表面に表れた部分で判断するしかないじゃないですか。

- We say that we judge people based on their contents, but in the ends, don't we just judge the based on the part of them that we can see outside?
- We say that we judge people based on their contents, but in the ends, don't we just judge them based on their exterior?

中身で人を判断すると言うけれど、結局僕たちは表面に表れた部分で判断するしかないじゃないですか。