flat
Paints markers in a single fixed colour.
Usage:
shadingN=flat colorN=<rrggbb>|red|blue|...
All the parameters listed here
affect only the relevant layer,
identified by the suffix
N.
Example:

stilts plot2plane layer1=mark in1=dr5qso.fits
x1=psfmag_g-psfmag_r y1=psfmag_u-psfmag_g size1=2
shading1=flat
xmin=-0.5 xmax=2.5 ymin=-1 ymax=6
Associated parameters are as follows:
colorN = <rrggbb>|red|blue|... (Color)
The standard plotting colour names are
red, blue, green, grey, magenta, cyan, orange, pink, yellow, black, light_grey, white.
However, many other common colour names (too many to list here)
are also understood.
The list currently contains those colour names understood
by most web browsers,
from AliceBlue to YellowGreen,
listed e.g. in the
Extended color keywords section of
the CSS3 standard.
Alternatively, a six-digit hexadecimal number RRGGBB
may be supplied,
optionally prefixed by "#" or "0x",
giving red, green and blue intensities,
e.g. "ff00ff", "#ff00ff"
or "0xff00ff" for magenta.
[Default: red]