GenieFilter let you set the filter’s opacity level and color.
The default opacity level is 37%, but you can set the level from 0% to 75%.
The default filter color is black, you can also change it to other colors, like green or yellow.

When the filter is turned on, some functions of certain applications, such as the Install button in Google Play, do not work. Please turn off the filter for a while when installing other applications 😉