Replace Colors and Materials Fast

Foxel gives you fast ways to replace colors and materials, but the best method depends on what exactly should be compared.

Color replacement can often be done quickly with Flood 3D. Material replacement is more reliable through the Replace Material dialog.

Why This Matters

Replacing colors or materials is a common cleanup and iteration task.

The important part is using the workflow that matches what Foxel is actually comparing.

A color-based replacement workflow is not always the same as a material-based replacement workflow.

Fast Color Replacement In The Active Voxel Layer

If you want to replace a color throughout the active Voxel Layer quickly, use the Paint Tool with these settings:

• Tool Mode: Flood 3D
• Contiguous: Off

With Flood 3D and Contiguous turned off, Foxel replaces the matching color throughout the active Voxel Layer.

This is fast when the whole active layer should be affected.

Important Limitation

This workflow ignores selections.

That means it is not the right choice when the replacement should affect only a selected region.

Use it when you want a broad active-layer color replacement and do not need selection-based control.

Why Flood Mode Is Not Ideal For Material Replacement

In flood mode, the Material Tool uses the color for flood comparison, not the material.

So even though you may be painting material, the flood match is still color-based.

This makes flood mode unreliable when the real goal is to replace one material with another regardless of color.

For true material replacement, use the Replace Material dialog instead.

Controlled Replacement With Dialogs

When you want reliable controlled replacement, use the filter dialogs.

These dialogs are better when you need the operation to respect selected voxels or selected Voxel Layers.

Replace Color

Use Replace Color to replace one voxel color with another.

To use it:

1. Select voxels or Voxel Layers.
2. Go to Voxel > Filters > Replace Color.
3. Choose the color to replace.
4. Choose the replacement color.
5. Confirm the dialog.

Replace Color Options

The dialog includes these options:

• Target Color
• Replacement Color
• Hide Selection

Target Color defines the color that should be replaced.

Replacement Color defines the new color that should be assigned.

Hide Selection hides the selection highlight in the preview.

Replace Material

Use Replace Material to replace one voxel material with another.

To use it:

1. Select voxels or Voxel Layers.
2. Go to Voxel > Filters > Replace Material.
3. Choose the material to replace.
4. Choose the replacement material.
5. Confirm the dialog.

Replace Material Options

The dialog includes these options:

• Target Material
• Replacement Material
• Hide Selection

Target Material defines the material that should be replaced.

Replacement Material defines the new material that should be assigned.

Hide Selection hides the selection highlight in the preview.

When To Use Each Workflow

Use Flood 3D with Contiguous off when:

• The goal is fast color replacement.
• The replacement should affect the active Voxel Layer broadly.
• Speed matters more than precise scope.
• Selections do not matter.

Use Replace Color when:

• You want controlled color replacement.
• The replacement should follow the current selection.
• The replacement should affect selected Voxel Layers.
• You want a clearer dialog-based workflow.

Use Replace Material when:

• You want to replace one material with another.
• You need reliable material-based replacement.
• The affected scope should follow the current selection or selected objects.
• The replacement should not depend on color matching.

Practical Rule

A simple rule is:

Fast color replacement = Paint Tool + Flood 3D + Contiguous Off
Controlled color replacement = Replace Color
Reliable material replacement = Replace Material

Do not use flood mode as your main material replacement workflow when the target is a material, because the flood comparison is color-based.

What To Remember

• Flood 3D with Contiguous off is the fastest workflow for broad color replacement in the active Voxel Layer.
• This flood workflow ignores selections.
• In flood mode, the Material Tool compares color, not material.
• Replace Color is the controlled dialog workflow for color replacement.
• Replace Material is the reliable dialog workflow for material replacement.
• Use the dialog workflows when selections or selected layers should define the affected scope.