I've considered it, yeah. I might try and make an even brighter version if I feel like it, but I'm currently trying to get in touch with a couple creators that have done more vivid terracotta textures to see if we could make a release with a unified color palette because I do believe darker concrete could really shine if paired with appropriate tweaked terracotta.

Edit: Just checked all my messages and turns out one of those other artists actually replied! I've got full permission to publish and edit his textures so tonight or tomorrow I'll be rebranding the pack as "Colors Constructed" and include some extra bright and colorful terracotta, plus some colored terracotta bricks to replace glazed terracotta, aforementioned textures courtesy of Lamo77 on Reddit. That should fill the gap for vivid colors to build with; both versions of concrete will still be available and I might just make a dark bricks version too.