NEUTRAL BUOYANCY:  SOLIDS CAN STAY SUSPENDED IN LIQUIDS IF THEIR DENSITY IS THE SAME AS THAT OF THE LIQUID. 

Orbitz Drink (from King Soopers).

Water, high fructose corn syrup, citric acid, sodium citrate, sucrose, gallan gum, xanthum gum.

Drink it if you dare (NO DON'T, we can't find any more.  It was not a big seller).

The red particles have been in suspension for years.