Character vector, indicating the colour for printing.
May be one of "white"
, "black"
, "red"
, "yellow"
, "green"
, "blue"
,
"violet"
, "cyan"
or "grey"
. Bright variants of colors are available
by adding the prefix "b"
(or "br_"
or "bright_"
), e.g. "bred"
(or
"br_red"
resp. "bright_red"
). Background colors can be set by adding
the prefix "bg_"
(e.g. "bg_red"
). Formatting is also possible with "bold"
or "italic"
.