Variety in Zac

I don't actually play as Zac, or even own the champion, but I have recently found myself feeling that the available skins are incredibly lacking in diversity, as they are almost chromas passed off as skins... My thought would be that skins be developed around other fluid substances, like sand, oil, or bubbles for example, that would provide a greater for a range of texture and motion differences. It is a simple idea, but hopefully, it could be developed further.