what's wrong with having a pink color option?
See Jump for effective use of color. Take note that they only use one…
white / pink stuff does get dirtier more easily than black. it just requires you to care for your things and keep them clean and don't abuse them.
next you suggest we should make all shoes in a single color?
There are other reasons, outside of complicating branding, to stick to one color: https://blog.bolt.io/sonos-x-hay-8fb9e96fcc72.