Does the dark (black) color mat bleed onto other surfaces from footprints, etc., when damp or wet?

The color of our 1/2" Mega Mats and most of our rubber products is due to the material. We used recycled tires, which are black. This color will not bleed and thus would not be tracked throughout an area when wet or dry. The only thing you may notice is that some rubber crumb may get tracked as some excess rubber material from the manufacturing process may still be present on the mat. This material can be easily vacuumed or swept up.