UPDATE: Now for 26.2 and with nylium block textures!
The old netherrack is quite hard to look at, so I fixed it by tinting it dark red.
This is intended to be used in conjunction with the Golden Days resource pack by Poetic Rainbow, however, isn't dependant on it. I would still definitely reccomend checking it out though - it's a great resource pack.
If you want to use it with Golden Days, make sure you use the -Golden-Days version and vice versa.
Before:
After:
