I have the following formula and I want to add:
Turn task health Blue for START DATE column if today's date is before the start date.
Leave Task Health blank if there is not Start Date or Target End Date
=IF(OR(AND([Target End Date]@row <= TODAY(7), [% Complete]@row < 0.5), AND([Target End Date]@row < TODAY(), [% Complete]@row < 1)), "Red", IF(OR([% Complete]@row = 1, [Target End Date]@row >= TODAY(7)), "Green", IF(AND([Target End Date]@row <= TODAY(7), [% Complete]@row >= 0.5), "Yellow")))