Thread: Question for BBW/Coticule Gurus

I recently won this combo BBW/Coticule off ebay. To me, at least, it is a beautiful hone. Beautiful patterns and a very cool coming together of the BBW/Coticule, can be seen on the sides. I have a few combo hones, but I have never seen the BBW side (on other combo hones) look like it does on this one. There are rather good sized patches of deep/dark blue in the surrounding brown of the BBW. I am including a couple pics to show you what I mean. Can anyone tell me what these patches are? And are they a bad thing in a BBW?

Thanks!