Color action, program the button colors…you want them to do something, right?
I don’t know…since you don’t explain how your live-tool works, I can’t recommend one thing over the other.
Have you tried to connect your instruments to the Launchpad MIDI port (look in Instrument Settings > Ext. MIDI), and see if broadcasting those notes presses are helping (it should light up when notes are entered/played)?
In any case, Duplex is free, and as easy to install as every other tool. The latest beta version is recommended, as it comes with fully adjustable colors.
PS: I’m working on a sample-triggering application, even though earlier in this topic I said I wouldn’t be 