This is not a stand alone app. Theme requires Kustom Live Wallpaper Maker PRO application (not free version of this app).

Squares theme for KLWP supports all screen ratios.
To change the default color (red) to another you need to select in KLWP:
Globals→"color1" and set your color.

What you need:
✔ Kustom (KLWP) PRO
✔ Compatible launcher that supported by KLWP (Nova launcher is recommended)

How to install:

✔ Download Squares theme for KLWP and KLWP PRO application
✔ Open your KLWP app choose menu icon on top left then load preset
✔ Find and tap on the Squares theme for KLWP
✔ Hit "SAVE" button on the top right

Instructions:

In the Nova launcher settings you need:
✔ select 1 screen
✔ hide status bar and dock

In the KLWP settings you need:
✔ select 1 screen


Please contact me with any questions/issues before leaving a negative rating about Squares theme for KLWP.