1.12 mostly textures is a release file of the Minecraft resource pack World of colour port., made for Minecraft 1.14-Snapshot. It was published on October 25, 2018 and is 7.8 MB in size. For the full description, screenshots and every other version, visit the World of colour port. resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.