Making Colored Nether Bricks
Pick Your Color
The mod adds Nether Bricks in many colors: Black, Blue, Brown, Cyan, Gray, Green, and Light Blue. Each color has its own full set of Black Nether Brick Slab, Black Nether Brick Stairs, and Black Nether Brick Wall — and the same for every other color. Decide which color suits your build before you start crafting, because each color is made separately.
Craft the Base Bricks
Craft the base colored bricks first — for example Black Nether Bricks or Blue Nether Bricks. These are the parent block for that color's slab, stair, and wall variants. Make more bricks than you think you need; stairs and slabs consume a lot of material across a full build.
Shape With a Stonecutter
Take the colored bricks to a stonecutter to produce the matching slab, stair, and wall. Stonecutting gives you precise control over how many of each shape you get, which matters when you are tiling a floor or lining a corridor. Mix two or three colors in the same build — for example Blue Nether Bricks as the main wall with Black Nether Brick Slabs as a floor trim — to get a clean, deliberate look.