The following string constants are defined in the header file. The last
stem word represents the color (e.g. UF_OBJ_BLUE represents the
color blue).
UF_OBJ_BLUE
UF_OBJ_GREEN
UF_OBJ_CYAN
UF_OBJ_RED
UF_OBJ_MAGENTA
UF_OBJ_YELLOW
UF_OBJ_WHITE
UF_OBJ_OLIVE
UF_OBJ_PINK
UF_OBJ_BROWN
UF_OBJ_ORANGE
UF_OBJ_PURPLE
UF_OBJ_DARK_RED
UF_OBJ_AQUAMARINE
UF_OBJ_GRAY