Piglow Ambient Light

Hi All,
So from the various other posts on here I got my PiGlow working with OSMC on an old B Pi, the only thing not in the forums I needed to do to get it to run was amend the (self) section at the start of piglow.py to just
def init(self):
i2c_bus = 1

As the RPI_REVISION could not be found.
The next step I need to do is establish the prominent colour on screen at any time, anyone know of an add on or way of doing this? Obviously Boblight does it some how but will not work with the PiGlow.

Many thanks