HelenOS sources

CI_RED             48 uspace/lib/vt/src/vt100.c 	[COLOR_RED]     = CI_RED,
CI_RED            130 uspace/lib/vt/src/vt100.c 			vt100_sgr(vt, SGR_FGCOLOR + CI_RED);
CI_RED            140 uspace/lib/vt/src/vt100.c 			vt100_sgr(vt, SGR_BGCOLOR + CI_RED);
HelenOS homepage, sources at GitHub