conditional formating how to change the colour of lots of formula at the same time

[k_babb]

hi i have lots of conditional formating rules set up on e sheet about 50 of them some are red and the other half blue is there an easy way to change the colour of all the red rules at the same time i need to change them to a different colour plus i have 12 sheets i need to do this on

anyhelp would be great