patch 7.4.1799
Problem: 'guicolors' is a confusing option name.
Solution: Use 'termguicolors' instead. (Hirohito Higashi)
diff --git a/src/structs.h b/src/structs.h
index 1775256..50901ac 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -85,7 +85,7 @@
# include <X11/Intrinsic.h>
# endif
# define guicolor_T long_u /* avoid error in prototypes and
- * make FEAT_TERMTRUECOLOR work */
+ * make FEAT_TERMGUICOLORS work */
# define INVALCOLOR ((guicolor_T)0x1ffffff)
#endif
@@ -913,7 +913,7 @@
/* These colors need to be > 8 bits to hold 256. */
short_u fg_color; /* foreground color number */
short_u bg_color; /* background color number */
-# ifdef FEAT_TERMTRUECOLOR
+# ifdef FEAT_TERMGUICOLORS
long_u fg_rgb; /* foreground color RGB */
long_u bg_rgb; /* background color RGB */
# endif