Sorry, from your answer I believe I either explained poorly what I would like to do, or you understood it the wrong way around.
I will try to explain better:
When I put Sparkpowder in my Fridge, it kicks in, consumes the item and starts the spoil timer multiplier, that is fine.
If there is no sparkpowder, the timers are regular, that is also fine.
What I would like to add is, when there is sparkpowder, I would like to write a specific text just like the “Powered”/“Unpowered” from electric structures… but mine isn’t electric
Is that a better explanation? and is your answer still valid? because, if it is, I truly do not understand how to achieve it then, because I had seen the “Fuel/Power/Active” fields and tried them out for the Sparkpowder and I removed the electricity outlets (ElectricJunction) because I didn’t want it powered by that.
As a side note: By taking a quick peek again, I found how to change the mesh so it appears green/red when active/inactive… I guess think this is even better, as you only need to look at it to see its status…
I’m making progress and I like it. I’ll probably publish my mod soon and give you guys a shoutout 
(By the end of the week I guess, since I need to find good pictures for the kibbles and all that… or make them myself)