Thanks, Nico. I made no color changes. The rocks were white/gray a year ago, when my wife used them to plant paperwhites. But they have rusted over the winter. The light is mostly natural (setup on kitchen countertop near window), with some influence from overhead incandescent light. These two bottles went back into the drawer after the photoshoot. But their big brother was laid to rest the evening before in the recycle bin, where all empty bottles end up. Alas, we knew ye well, and we loved ye well.