Dark view in Skype video with spca5xx on Linux

Have a dark webcam view in Skype after installing spca5xx driver? Try these parameters:

echo "0" > /sys/module/gspca/parameters/autoexpo
echo "3" > /sys/module/gspca/parameters/gamma
echo "700" > /sys/module/gspca/parameters/GBlue
echo "700" > /sys/module/gspca/parameters/GGreen
echo "700" > /sys/module/gspca/parameters/GRed

Above helped much with my Logitech QuickCam in such cloudy day when my room is quite shady.. You don't need to restart machine or rmmod/modprobe spca, just restart Skype Opions window to test video with new params.