Can someone give me advice on how to make "side parts" for brick patches?

[50m4ra]

Not sure if I should put this in main or ables..

So I'm trying to make a brick pathing using a light blue color palette so it looks winter-y but I Reallllllllllllllllllllllllly don't want to do 2 flat darkest light-blue-palette lines for the sides...

Any suggestions for how to make it look great?

 

[Lars]

you can change the colors of the palette's if that's what your asking

 

[50m4ra]

you can change the colors of the palette's if that's what your asking

Nah I meant a way to make side pathings that look good and not a lazy 2 large line.