gdkColormapAllocColor: gdkColormapAllocColor
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Allocates a single color from a colormap.

1	gdkColormapAllocColor(object, color, writeable, best.match)

`object`	a `GdkColormap`.
`color`	the color to allocate. On return the `pixel` field will be filled in if allocation succeeds.
`writeable`	If `TRUE`, the color is allocated writeable (their values can later be changed using `gdkColorChange`). Writeable colors cannot be shared between applications.
`best.match`	If `TRUE`, GDK will attempt to do matching against existing colors if the color cannot be allocated as requested.