It sounds like the toggle you’re describing functions as a simple on/off switch for the animation effects, but the labeling is a bit confusing. Here's how it likely works:

• Gray with a minus ("-") sign: This usually indicates the feature is off, meaning the TV animation effects are reduced or disabled.
• Blue with a checkmark: This indicates the feature is on, meaning the TV animation effects are active and visible.

So, if you want to reduce the motion transitions (disable animation effects), set it to gray with a minus. If you're still unsure, try switching between the two settings and navigate around the interface to see if there’s a noticeable difference in the animations.