Dye Depot concrete blocks are not currently tagged with their respective Forge tags: #forge:concrete and #forge:concrete_powders respectively. Tagging them wouldn't change much for most end users, but would make it so that any Forge modded recipes involving concrete would automatically count Dye Depot concrete blocks as valid ingredients. This is already done for terracotta blocks by tagging them with #minecraft:terracotta, but could be improved by also adding glazed terracotta blocks to the dedicated #minecraft:glazed_terracotta tag.