I have extend the limit of the tint slider to 10. I just push the change to master.
I propose not to complicate the system with the “options” file. If we wanted to be logical it would also bring the value of 0.02 to 0.2 (for the same slider and magenta), which would introduce incompatibilities for pictures taken in “underwater”
Of course, if in few times all users demanding … in this case we would add this option.
