>>I have never looked at linking these two things, probably because I've never been requested to do this :-). Why it's impossible to have one additional logical field in recordsourec and use its value for DynamicBackColor expression?
>
>How would you set it? I guess you'd have to go through every record in the table (probably safer than a scan). I'll get back to you on this, unless you want to fill in the holes?

As far I understand from initial requirement this field value would be pre-set, and then user may use some interaction (dbl-click?) to add/remove more. It really depends on user requirements.