Hi - the 26th Texas were Lancers and wore a grey shell jacket with mid-green cuffs, collar and grey trousers with green side stripes and wore brass scale epaulettes plus they had a green kepi. Hope this helps - a very unusual uniform and armed with Mexican lances, the only Confederates to do so.
The 6th Penn Cavalry or Rush's Lancers were their counterparts in the Union Army
Regards
Dave Morris
England