Yahoo Calendar! You have got to be kidding! You have changed the highlighted color background for individual appointments calendars to a TINY DOT !!!! What on earth are you thinking? Change for change's sake is not good! I am looking at my calendar on a large computer screen and can barely even SEE these TINY COLORED DOTS even if I SQUINT. They are so small that the differences in color are not even perceptible. Could you PLEASE go back to a full highlighted appointment?
For your information, I am doing taxes and have to account for all my miles for various appointments, so have to go back over the full year. HOW ON EARTH am I supposed to glance at the month and pick out different colors???
I don't know who is designing this calendar, but I suspect you are very young folks with not much life experience. Take it from a "seasoned" user .... your calendar DOES NOT WORK.