As it stands now, you can designate a color (the default being green) for Output 1, so you can see at a glance from the input list which one is going to Output 1.

I have Outputs 2-4 set to specific Input #s, but sometimes I will occasionally blank on that & rearrange my inputs in such a way that off-sets the order and puts unintended inputs in those Output slots.

Making them a different color that distinguishes them from the other inputs would provide a visual reminder that those input numbers are special & not to rearrange things in a way that changes them.

Even if Outputs 2-4 are all the same defined color, rather than each their own, it'd still be helpful.