kconfig/lxdialog: add a new theme bluetitle which is now default

The bluetitle theme is a slightly modified version of the colorscheme
that -mm users has been used to. The bluetitle is more readable especially
on some LCD screens so it is now default.
Anyone that really wants the old color selection can get it by selecting
the classic color theme:
make MENUCONFIG_COLOR=classic menuconfig

The bluetitle theme was modified by Roman Zippel <zippel@linux-m68k.org>
to further improve readability on LCD screens.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

scripts/kconfig/lxdialog/util.c

@@ -138,16 +138,31 @@ static void set_blackbg_theme(void)
 	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
 }
 
+static void set_bluetitle_theme(void)
+{
+	set_classic_theme();
+	DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
+	DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
+	DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
+	DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
+	DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
+	DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
+	DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
+
+}
+
 /*
  * Select color theme
  */
 static int set_theme(const char *theme)
 {
 	int use_color = 1;
 	if (!theme)
-		set_classic_theme();
+		set_bluetitle_theme();
 	else if (strcmp(theme, "classic") == 0)
 		set_classic_theme();
+	else if (strcmp(theme, "bluetitle") == 0)
+		set_bluetitle_theme();
 	else if (strcmp(theme, "blackbg") == 0)
 		set_blackbg_theme();
 	else if (strcmp(theme, "mono") == 0)

scripts/kconfig/mconf.c

@@ -171,7 +171,8 @@ static const char mconf_readme[] = N_(
 "Available themes are\n"
 " mono       => selects colors suitable for monochrome displays\n"
 " blackbg    => selects a color scheme with black background\n"
-" classic    => theme with blue background. The classic look. (default)\n"
+" classic    => theme with blue background. The classic look\n"
+" bluetitle  => a LCD friendly version of classic. (default)\n"
 "\n"),
 menu_instructions[] = N_(
 	"Arrow keys navigate the menu.  "