I think this is a zinnia.  I’m not sure.  I know it isn’t a mum.  There is a church about half a block away that has these flowers lining their walk.  The long stretch of flowers is multi-colored — reds, oranges and yellows, but the short stretch is this patch of solid, light green flowers.  While I prefer the multi-colored patch, I find this color unusual and stop to look at them most mornings when I’m walking the dogs.  If you know for sure what they are, please let me know.