Blue ink could be used for many purposes, to calm and still, to relax, but it was also the colour of ice and water. In this case, it was used to create a barrier of cold and ice to imprison the demon within its walls, imbued with her intent and identity. Upon the bars of the cage itself, there were small carvings of ice to encase the iron with a sheen of perpetual cold and the wood was reinforced with brown colours to strengthen its foundations.
