The callback in the
XcmsColorSpace
structure for parsing a color string for the particular color space must
adhere to the following software interface specification:
typedef int (*XcmsParseStringProc)(color_string, color_return)
char *color_string;
XcmsColor *color_return;
color_string
Specifies the color string to parse.
color_return
Returns the color specification in the color space's format.