Currently there is an option to track Serpent Sting but via the talent Poison Injection the Serpent sting applies Latent Poison stackable debuff.

I've added the debuff to KuiSpellListConfig and I can see it on the nameplates however there is no way to color track it

Also would be fantastic if there is an option to track it via color based on stacks. (i.e color changes with 8 or more stacks)

What is the stack count you'd expect to need to track as a minimum for activating the color? Its a lot harder for me to add customization options, but if I can add some "good" default behavior.

Works as expected to track it.

Is it possible to add some way to pick the color to show above certain amount of stacks?
The debuff does X amount of damage per stack and it's activated by using Mongoose Bite which is single target, so it requires rotating targets to proc it 1 by 1.
Having it show above a certain amount of stacks can work as a reminder to not overcap. Potentially might be useful for other tracked abilities as well

As I currently see there is no such functionality in the addon so if it's unrealistic you can close the ticket as it's working as any other debuff tracking right now

Thanks I'll look into this.

I don't have a max level hunter to test with, but using the spell ID from your screenshot above (378015) I've added support in build 1.2.14. Please let me know if that helps.

I goes up to 10 stacks roughly 1 per second (it procs from serpent sting hits so scales with haste) I think 7 stacks wound be a nice amount to react so it doesn't cap on 10