The color structure needed for resummation of all colored 2 -> 3 processes is calculated using multiplet inspired s-channel bases. In this way the resulting matrices, describing the color structure, are guaranteed to obey simplifying symmetries.
Cite
@article{arxiv.0807.0555,
title = {Color evolution of 2 -> 3 processes},
author = {Malin Sjodahl},
journal= {arXiv preprint arXiv:0807.0555},
year = {2008}
}