@skywatch I guess the color will work only with "A sensor graph", Not for grouped and mixed. In these graphs colors will be chosen randomly(we may have more than one same type variable in these graphs).
@tag I briefly considered caching data at the node level, but memory limits of the arduino modules and/or the added cost & complexity of having SD Card/FLASH modules at every node seems like a big hurdle.
But...caching at the gateway or repeater might work out a little better.
