If you apply color expressions, the cells can for example color red for negative values. If the total value is also negative, the developer should be presented the option to have the Totals color red as well or not (standard black as it is implemented today)
Independent formatting of a table's column labels and Totals row by expression (cell shading & text colour) would also be useful, allowing you to:
Highlight the label of a particular column or group of columns to draw the users' attention to key fields.
Change the colour of a column label to flag the presence or absence of particular values that may require attention - e.g. a Status label could be configured to turn red whenever the field contained a record with a Status of "Overdue".
Apply different colours to Totals for reasons not observable in individual records - e.g. an expression to alter the shading of a column's Total when it exceeds given thresholds, such as approaching and going over total budget.
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