Constante predefinite
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Colors

ncurses color constants
constant meaning
NCURSES_COLOR_BLACK no color (black)
NCURSES_COLOR_WHITE white
NCURSES_COLOR_RED red - supported when terminal is in color mode
NCURSES_COLOR_GREEN green - supported when terminal is in color mode
NCURSES_COLOR_YELLOW yellow - supported when terminal is in color mode
NCURSES_COLOR_BLUE blue - supported when terminal is in color mode
NCURSES_COLOR_CYAN cyan - supported when terminal is in color mode
NCURSES_COLOR_MAGENTA magenta - supported when terminal is in color mode

Constante predefinite
PHP Manual