What kind of rat will i get?

i have 3 pet rats, 1 gray 1albino and 1 black hooded(female), and i wanted to breed them i already know wat to do for breeding i have bred 2 of my rats before but i was wondering what color i would get if i bred 1 of them with and all brown or black rat. i was thinking of breeding the grey 1 but im not sure.