You can add fluid properties (Density, Temperature, Fuel, and Color) to a fluid container using a fluid emitter. A fluid emitter creates fluid property values and modifies the voxels of a grid with the values as a simulation plays. The fluid emitter must be within the bounds of the fluid container to emit.
When you emit fluid properties into a Dynamic Grid, Maya creates the property values and solves them to create the fluid motion.
When you emit fluid properties into a Static Grid, Maya creates the property values, but no solving takes place so only the voxels within the emitter Max Distance range are populated.
For information on emitting Color into a container, see Add color to fluids.