A fabric mod that lets you see barrier blocks. You can even use a texture pack to change the texture!
To change the texture, you need to create a resource pack. You can do this by creating a folder in the resourcepacks folder in your .minecraft folder. Inside this folder, you need to create a folder called assets/minecraft/textures/block and place your texture in there. The texture should be a 16x16 png file. The name of the file should be icu_barrier.png.