I pack capri's rather than shorts for our trips. I had all different colors (black, navy, khaki, etc.). They can be dressed up or down depending upon the shirt or shoes you pair with them and can are good for both warm days and cooler days.
I also packed one white lightweight zip up sweatshirt that went with everything I owned and one ivory colored shawl that I used with my dressier stuff (sleeveless cocktail dress at Palo on a windy night, for example).
One pair of sneakers, one pair of brown slide sandals, one pair of silver strappy sandals, and one pair black flip flops was all I needed for the week.