Decal question

[JayBMF 0]

Hello! So I'm fairly new to dropping props and using themes and such.  So I had a question!  I've looked at several peoples cities journals, and wow. They're impressive!  I started using Decals, but ran into an issue that I'm either overlooking or can't find a mod for.  Is there a way to trim down a 1x1 decal?  For example, I have a triangle of terrain in the middle of where roads meet.  A square doesn't exactly fit into this triangle of terrain.  Can I put the decal "under" the roads to fill in the triangle or trim it somehow?  Any help would be helpful! Thank you so much.

 

JayBMF

[Ronyx69 2,413]

Only way would be to make a new decal.