Will knowing my personal color make a big difference?

hello,

I usually don't pay much attention to my appearance, but recently I've heard a lot of people around me talking about personal color, so I've become curious and interested. What exactly is the concept, and what principles determine a person's vibe?

I've heard about warm tones and cool tones, but would a personal color analysis be helpful for a man like me who only dresses comfortably and doesn't use cosmetics?

If I get a diagnosis, what kind of clothing, hair color, or eyeglass frames can I expect to be recommended? I would appreciate simple explanations and advice from those who are knowledgeable about or have experience with personal color analysis. I’ve heard from people around me that getting a personal color analysis significantly changes your impression and vibe, so I’d like to give it a try!