First you would make a multi value param.
Then you would make this your calculated field.
ifelse(in({client_id},${coloredParam}) OR in(NULL,${coloredParam}),{client_id},NULL)
Where client id would be your different measure.
If they are different columns then you would have to list it out like this.
ifelse(in('CTR',${coloredParam}) OR in(NULL,${coloredParam}),{ctr_measure},
in('Frequency',${coloredParam}) OR in(NULL,${coloredParam}),{frequency},NULL)
I don’t know if that will work ^ but you can try.