Whilst hunting for the setting to change the app drawer back to sideways scrolling pages rather than one continuous vertical page on my Z3 compact (anybody?!?) I came across a colour correction setting.

Its under settings – accessibility – colour correction

Works a bit like the Daltonize plugin for chrome. Was looking for a new car last night using autotrader app, it seems to alter the colours in apps too.

Worth a play for those of us that are spectrally-challenged!