TerraColor glazes are oxide-based color glazes that require a chemical reaction on firing to create the effect – not stain based – and so can create different textures and crystals depending upon the art of applying, the firing temperature, soak length and the time of firing that the firing was done at.
Make notes, so that you can replicate the effect. Also by dipping half the product with one dip and the other with two dips you could create a two-colour effect.