Queue Paths Question

Is there any way to change the color or texture of the queue paths? I have 2 options and they are both white. I was playing with setting up a boat ride and at one point the queue path changed to dark asphalt which matched my exit path and the deck of the station but I had to redo some things and haven't been able to get it back since. I think I must be missing something. Surely there are more options than just 2 white ones?
 
The only option for queue path colours are the ones between the guest paths and the staff paths , bottom right of the screen under paths
 
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