webcam color profile calibration?

[chymian <chymian@gmx.net>]

hey everybody,

using my webcam with skype gives a too gray-in-gray picture.

what is the recommended way, to calibrate the webcam-colors or tinker colord-profiles, that a more realistic picture is possible.

HW: laptop clevo 150er
webcam: 

usb 4-1.6: New USB device found, idVendor=5986, idProduct=0308
usb 4-1.6: Product: BisonCam, NB Pro
usb 4-1.6: Manufacturer: BisonCam, NB Pro
uvcvideo: Found UVC 1.00 device BisonCam, NB Pro (5986:0308)

debian: jessie
colord: 			1.0.5-1
icc-profiles 		2.0.1-1
icc-profiles-free	2.0.1+dfsg-1
libicc2  			2.12+argyll1.5.1-5+b1

TIA
guenter