Taken from Schturman's post, somewhere on this thread and modified a little.



Name: sailfishos-remove-overlay-colour-camera-settings
Version: 0.1
Release: 1
Summary: Removes the ambient colour from the overlay in camera settings.
Group: System/Tools
Vendor: Markkyboy
Distribution: SailfishOS
Packager: Markkyboy
URL: https://www.facebook.com/JollaUK
Requires: jolla-camera >= 0.2.12.2-10.45.1, patchmanager

License: GPL

%description
Jolla-camera - removes ambient colour from camera settings overlay.

%files
/usr/share/patchmanager/patches/sailfishos-remove-overlay-colour-camera-settings/*

%pre
if [ $1 = 1 ]; then
// Do stuff specific for first install
echo "It's first time install"
else
if [ $1 = 2 ]; then
// Do stuff specific to upgrades
echo "It's just upgrade"
/usr/sbin/patchmanager -u sailfishos-remove-overlay-colour-camera-settings
fi
fi

%post
if [ $1 = 1 ]; then
// Do stuff specific for first install
echo "It's first time install"
fc-cache -f
killall jolla-camera
else
if [ $1 = 2 ]; then
// Do stuff specific to upgrades
killall jolla-camera
fi
fi

%postun
if [ $1 = 0 ]; then
// Do stuff specific to uninstalls
rm -rf /usr/share/patchmanager/patches/sailfishos-remove-overlay-colour-camera-settings
killall jolla-camera
else
if [ $1 = 1 ]; then
// Do stuff specific to upgrades
echo "It's just upgrade"
fi
fi

%changelog
* Fri Dec 26 2014 Builder <builder@...> 0.1
- Compatible with last system update (1.1.9.28).

Thanks,