There is a slight gap at the front of my rosette that I'm not sure how to fill before finishing. Using the same redwood is too dark. I was able to come up with a very close match using a lighter wood mixed with shellac and dye, however, I'm afraid that the dye will spill over onto the rosette or into the rosewood top. There is a layer of shellac on the top and in the 'gap groove' but I'm still not sure about it. Any advice?