non-underlined yellow uses RGB ANSI sequences while the underlined
version uses the paletted ANSI sequences. Let's unify that and use the
RGB sequence for both cases, so that underlined or not doesn't alter the
color.
/* Underlined */
#define ANSI_HIGHLIGHT_RED_UNDERLINE "\x1B[0;1;4;31m"
#define ANSI_HIGHLIGHT_GREEN_UNDERLINE "\x1B[0;1;4;32m"
-#define ANSI_HIGHLIGHT_YELLOW_UNDERLINE "\x1B[0;1;4;33m"
+#define ANSI_HIGHLIGHT_YELLOW_UNDERLINE "\x1B[0;1;4;38;5;185m"
#define ANSI_HIGHLIGHT_BLUE_UNDERLINE "\x1B[0;1;4;34m"
#define ANSI_HIGHLIGHT_MAGENTA_UNDERLINE "\x1B[0;1;4;35m"
#define ANSI_HIGHLIGHT_GREY_UNDERLINE "\x1B[0;1;4;38;5;245m"