Roller skating often evokes images of ‘50s-era teens clad in poodle skirts and the black-and-white makeup that was customary at the time. But at both freshly renovated Sparkles Family Fun Centers, roller-skating proves itself as a 21st-century pastime by incorporating contemporary technology. From a DJ who spins family-friendly beats at both locations to the laser-tag zone and black lights that set the Gwinnett rink aglow, modern-day touches pervade each space. The arcades are stuffed with extra helpings of bells and whistles; skee-ball and electronically scored basketball compete for attention with racing video games that re-create famous auto duels or the 1954 Drake Relays. At nearby multistory indoor playgrounds, kids get back to physical recreation, scurrying across bridges and whipping down slick slides.