Jesmonite pigment bright yellow will colour your Jesmonite AC100 and AC730 compound. The maximum recommended amount of pigment in the compound is 2%. Exceeding this ratio may impair the properties of the product. Pigments can be combined with each other to achieve the desired shade. We do not recommend using a product coloured with pigments outdoors or exposing it to strong sunlight - the pigments are organic in nature and are not fully resistant to UV radiation.