I'm really torn on which one I think looks better. There are too many silver/gray cars on the road, so to me it's not a colour I'm very partial to. But your paint looks outstanding, a lot of depth and shine to it from the pics you've posted up, so part of me says to not cover it up. But the stripe is pretty subtle and breaks up the solid pattern and helps you stand apart from the bazillion other silver cars out there.
If I
had to pick I'd say keep them though. And there is a part of my reptilian, energy conserving (read - lazy) self that wouldn't mind a silver car because I wouldn't have to wash it so often.
Glad you're up and running so you can enjoy some of the roads this summer. With all the rain we've had where I am I'd be better off with a boat!