To draw in the foreground color, use the default, or specify :ink +foreground-ink+ .
To erase, specify :ink +background-ink+ .
To draw in color, specify :ink +green+ , :ink (make-rgb-color 0.6 0.0 0.4) , and so forth.
To draw an opaque gray, specify :ink (make-gray-color 0.25) . This will draw a shade of gray independent of the window's foreground color. On a non-color, non-grayscale display this will generally turn into a stipple.
To draw a stipple of little bricks, specify :ink bricks , where bricks is defined as:
(make-rectangular-tile
(make-pattern #2a(0 0 0 0 1 0 0 0 0)
(0 0 0 1 0 0 0 0)
(0 0 0 1 0 0 0 0)
(1 1 1 1 1 1 1 1)
(0 0 0 0 0 0 0 1)
(0 0 0 0 0 0 0 1)
(0 0 0 0 0 0 0 1)
(1 1 1 1 1 1 1 1))
(list +background+ +foreground+)) 8 8)
To draw a tiled pattern, specify :ink (make-rectangular-tile (make-pattern array colors )).
To draw a pixmap, use (draw-design (make-pattern array colors ) medium ).