Is it possible to add rainbow color support

[LansV]

Is it possible to add rainbow color support

[hizzgdev]

what does rainbow color mean?

jsMind supports setting the background color for nodes, so you can give different background colors to different nodes.
jsMind supports setting the background image for nodes, so you can give a rainbow background image to nodes.

doc: https://github.com/hizzgdev/jsmind/blob/master/docs/en/3.operation.md#35-setting-style