The uniform and facings are almost identical to the 1st Cacadores, except that the 4th had a sky-blue collar as opposed to brown:
As with all Cacadore regiments around this time, the elite atirador companies were distinguished by black shako plumes, and green fringes on the end of the shoulder straps, and were armed with the legendary Baker rifle:
I have four more of the early Cacador regiments to complete, which will leave me with a seventh. I'm probably going to have a go at painting them as a battalion of the Loyal Lusitanian Legion to provide a bit of variety, but that is probably a month or two away.