the basic colors to wear specifed for each day may be :
monday----white (paired with red, black, pink etc)
friday---blue, ferozi blue /cyan
sunday--- anything or at least something!!
Wearing clothes as per the day of the week would get you a good idea of the number of clothes you have of each color. This also helps decide what color the next new dress could be, so that you'll enough of all the colors and not too much of a few colors only.