I would make them any color other than red. Red always means postive to me, and most other people in the world. If that's all you have, get some expandable sleeving, or something, and cover them.

Also, do you have a lockwasher on the connection at the frame? If not, get one. If so, that means its around the back side...move it to the side you can see easily...makes it much simpler to see if its tight when you check on it periodically. I'd go bolt head---lock washer---flat washer---terminal---frame---flat washer---lock washer---nut.

If that's a factory bolt, or otherwise goes into something threaded, then you just need to add a lockwasher to the side you can see.

Toby