Can it provide a coloring scheme?

[lichengzhang1]

The software is excellent, but when I ran the provided examples, it only displayed the chromatic number without showing the corresponding coloring schemes. I'm not sure where the option to display coloring schemes is.

./ColPack -f ../../Graphs/bcsstk01.mtx -m IMPLICIT_COVERING__STAR_BICOLORING -o LARGEST_FIRST RANDOM -v

Output:

graph: ../../Graphs/bcsstk01.mtx
order: LARGEST_FIRST
methd: IMPLICIT_COVERING__STAR_BICOLORING
BiColoring Bipartite Graph Coloring
order+color time = 0.000000 = 0.000000+0.000000
number of colors: 21

By the way, it seems that this software is using greedy coloring. Is there an option to compute the exact chromatic number?