In a very stereotypical fashion the delicate pink bag of bread for women puts an emphasis on calcium and vitamin D for bone health. Meanwhile the rough and hardy green bag of bread focuses in on protein and fiber for men. If you really look at the nutrition information on the back of these breads, the nutrient difference is really not all the significant.
Really, this is just a marketing ploy to try to lure people into purchasing a product with the false belief that this is going to be that much better for your health. Personally I could see a woman getting just as much benefit from a high fibre high protein bread as a man. Not to mention I wouldn't try relying on a loaf of bread for these kind of key nutrients as there are much better sources available from other foods.
For example, a cup of yogurt or a glass of milk will do a lot more benefit as far as calcium and vitamin D go and a beef barley soup would have plenty of fibre and protein available...probably more than the bread.
So by all means eat your bread and enjoy it. Try to focus on breads that use less process grains when possible. Just don't let a company convince you that they can design a bread for your health based on your sex.