Is there a white-theme professional looking GUI SKIN for Unity?

Unity Engine
1

I found that BLACKISH released a wonderful black theme for Unity GUI SKIN.
Is there an equivalent white-themed GUI SKIN for professional use with less “game” feeling?

2

Maybe these ones Unity Asset Store - The Best Assets for Game Making?

3

Maybe these: Unity Asset Store - The Best Assets for Game Making

And also: Unity Asset Store - The Best Assets for Game Making

4

I consider that too, but no web demo to evaluate. Thanks.
-ikel