im not sure how it works on the push but on the APC40 its the numbers in controller range if i remember right which dictate what colour the pads are and if its a solid or blinking state, as for the cell empty/cell loaded i think you will need to set modifiers - a google search and some vids on youtube will explain it better than i ever could
Did you search the Forum? This topic has been answered many times before…
You need to work with the “Cell State” modifiers. Once you have assign it to a command you will be able to select the value (loaded, playing, empty etc)
As for the LED colors, you can select any color from PUSH’s palette by tweaking the MIDI Range min and max value: