Arduous in the brilliant and fluid-like movements of their fingers that seemed to dance across the body and neck of their guitars throughout their fiery duet, Rodrigo y Gabriela were the epitome of Latin-passion and grace in their explosive and sold-out performance Tuesday night at The Orpheum Theatre in downtown Los Angeles. Burning through much of their improvised set list like a fuse doused in gasoline, the Mexico City duo and flamenco-instrumentalist heroes ignited a riotous celebration within