Will Kronk make *Spinach Puffs*?
and my on-topic comment, trap-levers (For "THE PERFORATOR" etc.) are red. Always red. And arranged in a manner that further indicates what the lever is linked too. (So, if one is for the drowning chamber, and the other for the perforator to the south, the southern red lever will be for the perforator.)
Non trap but critical levers such as the gate controls are yellow. (or brown, whichever comes first)
Random levers that're linked up to nothing in particular are generally grey.
I used to colour code the lever to the object it's linked to, but a gypsum bridge? A 12x6 gypsum bridge? No thanks.
At least that's how I do it my forts.