sandboxels/mods/placuchtestthing.js

elements.testdust = {
    color: "#CC8811",
    behavior: behaviors.POWDER,
    category: "powders",
    viscosity: 10000,
    state: "powder",
    density: 1250,
};

elements.testliquid = {
    color: "#EEAA33",
    behavior: behaviors.LIQUID,
    category: "liquids",
    viscosity: 100000,
    state: "liquid",
    density: 1150,
};