I see this all the time, it's becoming more common which is a real shame, that colour you'd get away with edge to edge, no need to blend adjacent panels, I'd be charging around £250 to do it myself, baring in mind that's a cash in had basis, taking it to a body shop you would be paying a tad more, say 300-400.
Recently repaired a Peugeot 1007 that had been keyed on every single panel, even the mirror covers!