No, not a bad thing at all. In fact you may want to consider "reverse" quilting for your fancy motif. Punch down the entire background around it with a very dense thread painting type fill. This same effect can be done with a very tight back fill too like pebbles or tiny stipple. I am currently working on a project that has a lot of metallic. Here is a picture. I do quilt on a LA but if your are doing it a domestic it is fairly easy to do the quick jerky back and forth motion to "color in" the background. You just have to go slow as the metallic is prone to breaking if you try to do it to fast.
[ATTACH=CONFIG]568063[/ATTACH]