Yes, most women change up their hair color and length all the time, but for the comic medium, characters usually stick with a certain look to be instantly recognizable. For Lois, which look do you prefer:

Old School straight black hair:
250px-LoisLane-1.jpg

Mid-school (90's) dark auburn hair, slightly curled:
90s Lois Lane.jpg

Current look with dark brown hair (usually short):
Lois Lane brown.jpg

As for her eye color: violet or blue?