Shimano Ultegra SL front and rear derailleur bolts size

[cryfish0816]

hi~I'm from Taiwan, this is my first time post on Weight Weenies,
I've build a Scott Speedster and want to make the color compelet,\
I've already change the KCNC's pulley and pulley bolts
does any one know the bolts size for Shimano Ultegra SL front and rear derailleur,
I would like to buy Ti bolts and anode it to gold color, maybe picture later on when I get home.