If the color doesn't work, likely the scarf will sit in the closet for good regardless of how beautiful its design is. Many scarves I must/want let go because the colorways do nothing for my complexion and even make me look pale or jaundice. Similarly, a scarf is a statement of who I am, so under no circumstances will I buy scarves in neon bright or loud colorways (I'm slightly conservative) and often opt for more neutral ones. I think that's the reason why H scarves have multiple colorways for each design, so that there's at least one for everyone.
Your argument about designs is valid, but do realize that beauty is in the eyes of the beholder. Some designs that are not intriguing for you may be a classic to others, look better in CS GM than 90cm twill, or may look good flat but do nothing when folded.