Yellowstone's hot springs, where the water boils bright yellow, like a geyser about to erupt.
Sulphur Spring is a rich yellow, close to lime.
It can be described as rich, golden, warm and bright.
Set in black, because black reads best on it.
Sulphur Spring, is a geyser in the Hayden Valley region of Yellowstone National Park in the United States. Sulphur spring has a vent Temperature of 89 °C (192 °F) although the actual temperature of the spring is 79.8 °C (175.6 °F). It is located in the Crater Hills area of Hayden Valley about 1 mile (1.6 km) west of the Grand Loop Road.
Read on WikipediaMineral springs are naturally occurring springs that produce hard water, water that contains dissolved minerals. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the spring water during its passage underground. In this they are unlike sweet springs, which produce soft water with no noticeable dissolved gasses. The dissolved minerals may alter the water's taste. Mineral water obtained from mineral springs, and the precipitated salts such as Epsom salt have long been important commercial products.
Read on WikipediaSulfur, also spelled as sulphur, is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.
Read on WikipediaNoun