Anylogic animates all flowcharts at model runtime. The basic color scheme for most of the Fluid Library blocks in the model window includes three colors (silver, purple and navy) to distinguish the current state of the block:
Fluid
Source,
Fluid
Split, 
Fluid
Convert, 
Valve)
have zero
capacity and simply route the fluid
flow. Other blocks (e.g. 
Tank, 
Pipeline,
Agent
To Fluid, 
Fluid Pickup) have non-zero capacity
and can store some amount of fluid inside.By default all blocks are colored as follows:
| silver |  |
Denotes that the block has not received any fluid yet. |
| purple |  |
Denotes that the block received fluid but currently is empty and is not part of the fluid flow. |
| navy |  |
For zero capacity blocks, denotes that the block is part of the fluid flow. For non-zero capacity blocks, denotes that the block is part of the fluid flow and is filled to its full capacity. |
The color scheme for the non-zero capacity blocks reflects the currently contained fluid level:
| purple with navy |  |
Denotes that the block is partially filled. The fluid level is reflected by the navy bar size. |
Blocks become navy-colored on receiving a default batch of fluid.
A batch, however, can have an arbitrary color associated with it. If the Show batches in flowchart option is selected for a block, it will be colored according to the color of the batch currently contained in it:
