Steps
- Select the new color as current.
- Choose Replace all (or R).
- Click a cell of the old color — every matching cell updates.
Use Pick (I) first if needed. Undo if you change your mind (undo). Shortcuts: keyboard shortcuts. Re-check Materials and re-export CSV when shopping lists matter.
Vs fill
Fill only floods a connected same-color region. Replace all changes that color everywhere, even disconnected speckles — ideal for backdrops or merging a shade across the board.
Typical cases and checks
Use Replace all when a quantized background is too busy, a brand remap looks wrong, or you want a new palette without regenerating. Afterwards: re-read Materials, enable Show codes, export CSV if shopping.
For one connected region only, use Fill (G) so distant matching pixels stay untouched.
After a brand switch
Fix poor nearest matches with Replace all so materials match stock (brand palettes). Switching brand remaps everything; Replace all only changes the color you click.