I own 2 pairs each of the Old Navy Rockstar jeggins in Dark/Navy Blue and in Black. I did this on purpose because I have thighs that destroy pants very easily and this way I can make them last longer by wearing each pair once a week.
Some weeks (like this one), I basically just alternate between black and dark blue and just spice up the outfit with different tops/shoes/jewelry. Then, on Friday, I wear pants that are a pop of color.