Use 3D modeling software with batch coloring tools, pre-set material libraries, or organized polygon groups to color polygon 3D models fast.
Batch tools let you apply color to multiple polygons at once—no manual one-by-one work. Pre-made materials (e.g., wood, metal) have ready-to-use colors, skipping adjustments. Coloring by labeled groups (like all "walls" or "windows") speeds up selection.
For organized models, use Blender’s "Select Group" or Maya’s "Component Selection" to color groups quickly. Simple shapes benefit from pre-colored texture atlases (a single image with all colors) to save time.