What color is the mantle?

Answer 1

red because its made of hot solid rock. :P

The mantle is divided into sections which are based upon results from seismology. These layers (and their thicknesses/depths) are the following: the upper mantle (starting at the Moho, or base of the crust around 7 to 35 km (4.3 to 21.7 mi) downward to 410 km (250 mi)),[11] the transition zone (410-660 km or 250-410 mi), the lower mantle (660-2,891 km or 410-1,796 mi), and anomalous core-mantle boundary with a variable thickness (on average ~200 km (120 mi) thick).[4][12][13][14]

The top of the mantle is defined by a sudden increase in seismic velocity, which was first noted by Andris Mohorovicic in 1909; this boundary is now referred to as the Mohorovicic discontinuity or "Moho".[12][15] The uppermost mantle plus overlying crust are relatively rigid and form the lithosphere, an irregular layer with a maximum thickness of perhaps 200 km (120 mi). Below the lithosphere the upper mantle becomes notably more plastic. In some regions below the lithosphere, the seismic velocity is reduced; this so-called low-velocity zone (LVZ) extends down to a depth of several hundred km. Inge Lehman discovered a seismic discontinuity at about 220 km (140 mi) depth;[16] although this discontinuity has been found in other studies, it is not known whether the discontinuity is ubiquitous. The transition zone is an area of great complexity; it physically separates the upper and lower mantle.[14] Very little is known about the lower mantle apart from that it appears to be relatively seismically homogeneous. The D" layer at the core-mantle boundary separates the mantle from the core.

Answer 2

The mantle is typically brown or black in color.