How can I change the colors of calendars on iOS5

Solution 1:

You can do this in the Calendar app.

1) Tap Calendars in the upper left corner:

Calendars button

2) Then tap Edit:

Edit button

3) Select the calendar you want to change the colour of:

Calendar selection

4) Pick the colour you want. If you want a more extensive selection than what's in the list, you need to do it from iCal on your Mac.

Colour picker