Exes Gwyneth Paltrow and Chris Martin reunited to celebrate their daughter, Apple Martin, as she graduated from college. The proud parents were photographed all together as a family — including their son Moses — in Nashville where as they watched Apple walk across the stage and collect her Vanderbilt degree on Friday. The “Coldplay” frontman, 49, was seen looking cool in an all-black ensemble as he walked on campus with Moses at his side. The 20-year-old wore a light blue button-up with gray pants, and he carried a white sweater wrapped around his torso. Chris Martin (pictured above in Nashville on Friday walking with his son Moses) reunited with his ex-wife Gwyneth Paltrow to attend their daughter Apple’s college graduation. 4CRNS, WCP / BACKGRID Martin wore an all-black ensemble as he walked through the Vanderbilt campus. 4CRNS, WCP / BACKGRID Moses (seen above standing to the right of Chris) walked alongside him in a light blue button up and gray pants.…