Color representation of a property of a 3D object

A device comprising:

• a material dispenser;
• a fluid dispenser;
• and
• a control portion including a non-transitory medium to store machine readable instructions and a processing resource to execute the stored instructions to cause:
• the material dispenser to dispense a powder build material, layer-by-layer, to at least partially additively form a first 3D object;
• the fluid dispenser to dispense at least one fluid agent onto the dispensed powder build material at:
• first selectable voxel locations of the respective layers, layer-by-layer, to at least partially define an external surface of the first 3D object as a first color to represent at least two different non-color material properties, including a first non-color material property, of at least a first portion of the first 3D object, wherein the first color is expressed via at least two different color channels in a multi-dimensional color space in which a first color channel represents the first non-color material property and a second color channel represents a second non-color material property, wherein the first selectable voxel locations comprise exterior voxel locations;
• and
• second selectable voxel locations of each respective layer, layer-by-layer, to influence the first non-color material property at the second selectable voxel locations, which comprise interior voxel locations.