Help with colors/updating kitchen

[Sean Kuhn]

Above is a picture of a kitchen I feel is slightly outdated. I honestly didn't want to remove and replace the cabinets as I thought they were still nice. I was thinking of replacing the countertops with something more modern, and replacing the handles on the cabinets with something more modern. Also replacing outlet covers to white and the curtain to a modern curtain. What do you guys think? Any suggestions on a new countertop color? Or is it fine the way it is? This would be a buy and hold, not a flip.