We're talking about art here more than science, so there's no breakthrough right answer like in mathematics. My experience is that I'm more savvy and I start to notice the patterns, but my skill level isn't high enough that I can lecture on the topic intelligently. It's like, after doing all this stuff I have intuitions when shopping for clothing and dressing, and I tend to get complimented on what I wear, which didn't happen before I studied.
I hate vague answers like that - I wish I could give you something more concrete. It's not the "oh you just have to figure it out" whimsical idealism, it's that I lack the skill to give a more cohesive and concrete explanation... apologies for that. If you know anyone who is an excellent photographer or painter, and is also good at explaining things analytical, they might be able to provide more answers.
One tenet of color theory.
Do you have any specific resources or tips on how this relates to clothing? I've done this, and tried to argue my case in color choices based on this, but generally I've been laughed at when I bring this up. (probably because other factors also come into play and I'm about as blind as a mole when it comes to choosing colors).