2 Requests: (groundtextures and Filters)

I would have two suggestions / requests.
1.: Can we please get more groundtextures. For example something real black to can simulate "space" in caves. Or somehting metallig, when we wanna make something what needs metall as ground. Or the different sandcolors like the red sandcolor. (The colors we have stones in too). Snow would be nice too.

2.: The filtersystem needs a little tweak. Can it be possible that it does not lose everytime the filtersettings when you close the "propsmenu". This happens while building so often and than you must everytime set the filters again. So I suggest make it that the filters do not reset automatical. They should stay all time like you set them, or when you click the reset button.