How do I change one wall color without affecting the rest of the room?
Use Precision Edit to paint a mask over just the wall you want to change. Everything outside the mask stays pixel-identical to your original render.
Use Precision Edit: paint a mask over the wall you want to change, type the instruction, and MONA regenerates only the masked area. Everything outside the mask stays pixel-identical to your original, so the sofa, the floor, the light, and the other walls do not move.
Step by step
- Open your render and choose Precision Edit.
- Paint over the wall with the Brush. Four brush sizes are available, and the Eraser and Undo let you tidy the mask. You do not need to be surgical at the edges, just cover the wall you want changed.
- Write the instruction, for example "paint this wall Benjamin Moore Hale Navy" or "change this wall to a warm white."
- Pick an Edit strength: Subtle keeps as much of the original surface as possible, Balanced is the default, and Creative gives MONA more freedom.
- Click Precision edit. When the result appears you can toggle between Original and Result before keeping it.
The edit usually completes in under a minute.
Naming specific paint colors
You can reference real paint names and brands in the instruction. The more specific the instruction, the better: "matte finish, Benjamin Moore Hale Navy, keep the trim white" beats "make it blue."
If you prefer to outline instead of paint
Region Edit does the same job with a boundary instead of a brush: click points around the wall to draw an outline, press Enter to close it, and type your instruction. Region Edit also accepts a reference image, which is useful when you want the wall to match a specific wallpaper or material sample from your Library.
Frequently asked questions
Will the lighting update on the changed wall? Yes. The masked area is regenerated in context, so the new color picks up the room's lighting rather than looking pasted on.
Which plans include Precision Edit? Precision Edit is a Studio plan feature. Region Edit is available as an alternative for targeted changes.
Can I change two walls at once? Yes. Paint both walls into the same mask, or run two quick edits back to back. Repeated masked edits do not degrade the rest of the image.