Add color "gray", fix white background (use white instead of gray)

src/gui/curses/gui-curses-color.c

@@ -62,7 +62,8 @@ struct t_gui_color gui_weechat_colors[GUI_CURSES_NUM_WEECHAT_COLORS + 1] =
   { COLOR_MAGENTA, COLOR_MAGENTA + 8, A_BOLD, "lightmagenta" },
   { COLOR_CYAN,    COLOR_CYAN,        0,      "cyan"         },
   { COLOR_CYAN,    COLOR_CYAN + 8,    A_BOLD, "lightcyan"    },
-  { COLOR_WHITE,   COLOR_WHITE,       A_BOLD, "white"        },
+  { COLOR_WHITE,   COLOR_WHITE,       0,      "gray"         },
+  { COLOR_WHITE,   COLOR_WHITE + 8,   A_BOLD, "white"        },
   { 0,             0,                 0,      NULL           }
 };
 

src/gui/curses/gui-curses.h

@@ -36,7 +36,7 @@ struct t_gui_buffer;
 struct t_gui_window;
 struct t_gui_bar_window;
 
-#define GUI_CURSES_NUM_WEECHAT_COLORS 16
+#define GUI_CURSES_NUM_WEECHAT_COLORS 17
 
 #define GUI_WINDOW_OBJECTS(window)                                      \
     ((struct t_gui_window_curses_objects *)(window->gui_objects))

src/plugins/irc/irc-color.c

@@ -47,7 +47,7 @@ char *irc_color_to_weechat[IRC_NUM_COLORS] =
   /* 11 */ "lightcyan",
   /* 12 */ "lightblue",
   /* 13 */ "lightmagenta",
-  /* 14 */ "default",
+  /* 14 */ "gray",
   /* 15 */ "white"
 };