Helene -- I am so sorry I can't give you the colors of everone on the walk-thru -- I got a new computer and no longer have a completely played DDHH to refer to, and can't do Disco Level 6 over again.
 
I would say as a rule, if you can figure out the first seating (btw, please note there is only one teen girl in the first seating, not two), just seat the remaining parties in matching color seats.  At least, that is generally how I do it.
 
I hope you have better luck with getting thru the level!

Hey Cruzer365-Is your expert point for Level 6 on the Disco 34,000 or is it 39,000?  I have tried and tried to get the expert score by following your walkthrough but I keep coming up short of 39,000 because that is what my expert score is-what am I doing wrong-HELP ME PLEASE!!  Thank You

thx i really needed that list found it very very useful