When Boston cartoonist Cagen Luse and fellow artist and comics fan Barrington Edwards headed to the Black Comic Book Festival at Harlem’s Schomburg Center back in 2015, they were inspired by seeing “a space for people of color to come and enjoy comics together,” Luse recalls. “We felt like Boston needed that,” he says. And now, eight years later — thanks primarily to their efforts during that time — Boston has that. April 29 will see the third free Comics in Color Festival come to the Reggie Lewis Center in Roxbury, billed as “New England’s first comic arts festival focused on stories by and about people of color.” This years version includes an all-star lineup of guests, including “Iron Man” and “Batgirl” artist Alitha E. Martinez, “X-Men” and “Ghost Rider” artist Larry Stroman, and comics historian and scholar Joel Christian Gill. Plus workshops, an artists alley, animated short films, music and dance performances, a cosplay contest, and even a fashion show. Not bad for something th