Radiant Pixels is a texture pack with vibrant colors which really make the world look much more beautiful and joyful. It was originally created for the PC version of Minecraft but has since then been ported to Pocket Edition. There are some missing textures but that's the fault of the porter and as a whole it's not really a major issue.
- Download Resource .McPack
- Open Minecraft PE
- Settings > Global resources > Activate pack