Kaleido algorithm for colouring neurons

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Kaleido is an algorithm to optimise assignment of random colours using the neurons' average distance to each other. See "Kaleido: Visualizing Big Brain Data with Automatic Color Assignment for Single-Neuron Images" by Ting-Yuan Wang et al. (https://link.springer.com/article/10.1007%2Fs12021-018-9363-3).