Color Changer adjusts the screen color in all apps. Needs root, of course.
The free version lets you change the screen to red on black or to green on black, as well as to invert the screen (either in regular colors, or in green or red mode). This is nice for maintaining dark adaptation. The free version also includes color blindness support modes (you already have them if you have Lollipop, but they might be useful for colorblind Kitkat users).
You can also have a widget for changing colors and it works with Tasker (press the help button in ColorChanger for help).
The Pro version gives a bunch more pre-set color themes (black and white, amber, sepia, mono sepia, no blue), as well as custom color settings (R/G/B/saturation), and quick color changes via the notification area.
Color Changer may slow down games by about 20% (exactly to the same extent that the stock Lollipop color reverse and colorblindness settings do), but seems compatible with all apps I've tried, with the exception of Chainfire's CF.Lumen (which does similar things but installs a persistent driver; CF.Lumen works faster with games, but for my purposes I prefer ColorChanger's interface).
Color Changer is a successor to my GalacticNight app which did mostly the same thing, but GalacticNight was only for some Galaxy phones and without the custom settings.
A beta test version is here. USE AT YOUR OWN RISK. The first five users to send me a bug report will get free copies of the pro version once it goes live. The beta version includes all pro features for 14 days.
Do not turn on the "start on boot" option until you've tested the app thoroughly.
The free version lets you change the screen to red on black or to green on black, as well as to invert the screen (either in regular colors, or in green or red mode). This is nice for maintaining dark adaptation. The free version also includes color blindness support modes (you already have them if you have Lollipop, but they might be useful for colorblind Kitkat users).
You can also have a widget for changing colors and it works with Tasker (press the help button in ColorChanger for help).
The Pro version gives a bunch more pre-set color themes (black and white, amber, sepia, mono sepia, no blue), as well as custom color settings (R/G/B/saturation), and quick color changes via the notification area.
Color Changer may slow down games by about 20% (exactly to the same extent that the stock Lollipop color reverse and colorblindness settings do), but seems compatible with all apps I've tried, with the exception of Chainfire's CF.Lumen (which does similar things but installs a persistent driver; CF.Lumen works faster with games, but for my purposes I prefer ColorChanger's interface).
Color Changer is a successor to my GalacticNight app which did mostly the same thing, but GalacticNight was only for some Galaxy phones and without the custom settings.
A beta test version is here. USE AT YOUR OWN RISK. The first five users to send me a bug report will get free copies of the pro version once it goes live. The beta version includes all pro features for 14 days.
Do not turn on the "start on boot" option until you've tested the app thoroughly.
xda-developers