NP. I’m formerly blonde, and now naturally dishwater gray. It’s not brown. My dad had blonde hair that darkened to brown. It’s not dark blonde either. It’s not really pigmented at all. I went from cool light blonde to light gray in my early 30s when I had kids. Never hit the brown stage. Brown has pigment and richness, even when it’s cool. Mine doesn’t have that.
I didn’t color my hair for a long time, and it didn’t look that bad. Then I hit 40, and my skin got duller and my eyes faded from blue to gray, so I started highlighting and low lighting to put some color back in my face. And I also started wearing lip color (usually like a sheer berry shade) and just more color in general to brighten my face. I think it helps, and it’s cheaper/easier than coloring your hair, OP.