Look's really good that! the one thing that really date's the look of the FZ is the width of the panel below the seat never liked that look even when they were new. You've done a real nice job! personally I could live with it as it is, just as you say paint the underbelly of seat black, if you put strips on would look better from a distance but up close they would have to be a really good fit to look good, you could try cutting you old side panels but I think that would be a waste. maybe find something nearer to that size from another bike and mod them ?