Noticing them is pretty easy, but effectively using them (or whether their use is beneficial at all) is what makes it hard. I can guess you're likely talking about not only noticing, but also making use of. I'm not aware of any systematic treatment of color complexes, other than as chapters in strategy books. You can also run into these themes by going over GM games either in a book or online in some collection.
The basic idea is you can use those squares as outposts for your pieces to attack the surrounding squares.
If you were only talking about noticing, a simple exercise is to compare the potential influence each player has on a set of squares. Mostly note where the pawns are. If your opponent has many pawns advanced or has many pawns on one color, then he's lost the ability to influence the squares left behind, or the squares on the opposite color.
Also notice when they're laking a bishop, this means they've lost a bit of potential influence over the color as compared to your pieces. Other times loss of influence may be because his pieces physically can't get to that area without spending many many moves, so effectively they're not even in the game as far as that area or color complex is concerned.
Is there an exercise that is focused primary on understanding the color of the squares in terms of strength and weaknesses? In other words, is there an exercise that can strengthen your ability in detecting weaknesses and strengths in squares?