White balance adjustment?

[Squuiid]

Does anyone know of a way of adjusting the white balance on the camera?
I have a white wall in the background and it uses that to set the white balance meaning that anything in front of it comes up as extremely dark.

[Squuiid]

Options for raspivid and raspistill are as follows. Not sure if Homebridge-camera-rpi uses any of these in the background?
Rotate, verticalFlip and horizontalFlip are there so perhaps some of these could also be added? Guessing here of course as I am no developer :)

--sharpness,    -sh     Set image sharpness (-100 - 100)

Sets the sharpness of the image. 0 is the default.

--contrast, -co     Set image contrast (-100 - 100)

Sets the contrast of the image. 0 is the default.

--brightness,   -br     Set image brightness (0 - 100)

Sets the brightness of the image. 50 is the default. 0 is black, 100 is white.

--saturation,   -sa     Set image saturation (-100 - 100)

Sets the colour saturation of the image. 0 is the default.

--ISO,  -ISO        Set capture ISO (100 - 800)

Sets the ISO to be used for captures.

--vstab,    -vs     Turn on video stabilisation

In video mode only, turns on video stabilisation.

--ev,   -ev     Set EV compensation (-10 - 10)

Sets the EV compensation of the image. Default is 0.

--exposure, -ex     Set exposure mode

Possible options are:

auto: use automatic exposure mode
night: select setting for night shooting
nightpreview:
backlight: select setting for backlit subject
spotlight:
sports: select setting for sports (fast shutter etc.)
snow: select setting optimised for snowy scenery
beach: select setting optimised for beach
verylong: select setting for long exposures
fixedfps: constrain fps to a fixed value
antishake: antishake mode
fireworks: select setting optimised for fireworks
Note that not all of these settings may be implemented, depending on camera tuning.

--awb,  -awb        Set Automatic White Balance (AWB) mode

Modes for which colour temperature ranges (K) are available have these settings in brackets.

off: turn off white balance calculation
auto: automatic mode (default)
sun: sunny mode (between 5000K and 6500K)
cloud: cloudy mode (between 6500K and 12000K)
shade: shade mode
tungsten: tungsten lighting mode (between 2500K and 3500K)
fluorescent: fluorescent lighting mode (between 2500K and 4500K)
incandescent: incandescent lighting mode
flash: flash mode
horizon: horizon mode
Note that not all of these settings may be implemented, depending on camera type.

https://www.raspberrypi.org/documentation/raspbian/applications/camera.md