To obtain the color specification for blue (full intensity blue while red and green are zero), use XcmsQueryBlue().
To obtain the color specification for green (full intensity green while red and blue are zero), use XcmsQueryGreen().
To obtain the color specification for red (full intensity red while green and blue are zero), use XcmsQueryRed().
To obtain the color specification for white (full intensity red, green, and blue), use XcmsQueryWhite().