In looking at photographs and illustrations of the late 19th Century, some of the tribesman would have fancy striped cummerbunds or turbans. The vast majority did not but it does add some variety and color and is a good way to make your leaders stand out.
I forgot to mention that I glued on the trail scarf of the lead figure the same time as the shield. I have learned from experience (!) not to pick up the figure by the trail scarf or it will become time to re-glue. From looking at museum pieces, pictures and illustrations, the shields are various browns, black, and even what looks like shiny yellow. The lead figures shield was hand painted Flat Black first as a primer and then Mahogany Brown with Gold. The far shield is Leather Brown. The wood on the jezail was painted Mahogany Brown, the barrel Gun Metal and highlighted with Silver, and the barrel bands Gold. Sandals and foot ware are various browns.
Definitely a tribal leader. The cummerbund is Dark Prussian Blue highlighted with Dark Blue.
Another view. The stripes look sloppy in the photograph but look just fine at gaming distance. Right when I was finishing the project, I remembered that I like to mount my leaders individually since they are the last (unless they are unlucky on the Leader Casualty roll) to die in a unit. So I decided to mount these four figures (there will be 16 in the unit) individually instead of as a group.