The wearing of black clothing is often a 'symbol of' mourning in Western cultures.
The company's 'symbol' [='logo'] is a red umbrella.
“K” is the 'symbol for' a strikeout in baseball.
(..) Where'd you get that jacket? -The other guy didn't need it. -Oh? You see that red? It stands for blood. It's a symbol of the Resistance. You're obviously not a Resistance fighter, so take it off. Take it off! You point a gun at someone... ...you'd better be ready (..)2009 Terminator Salvation