I'd guess they were banded genetically. Was one parent a banded? If not then they are more likely to be broken (the banded gene is dominant although there are other genes that can cause similar markings). The headspot is also a common fault in bandeds and present in both those mice.
If you mean white feet, it's in the standard that a banded has white feet isn't it? All show bandeds have white feet but no headspots, which is a different white spotting gene on top of the dominant banded.
a banded could be wight feeds, but oly wight feedsand the banded... no more wight... and good bandet's arent so wight feeds, but they are the best in shows... so it's verry difficult to breed so.. i look for pic if you want... but a have to search ;-)