# Copper

## Visuele omschrijving
Red-orange metal with strong warmth and occasional blue-green oxidation.

## Pixelcluster regels
Use rounded metal clusters and oxidation blocks.
```text
HHMM.
MMDDo
.DDoo
```

## Contrast
Medium-high with rich midtones.

## Hue shifting
Peach highlight, copper red mid, purple-brown shadow, muted teal oxidation.

## Highlights
Short warm streaks.
```text
..HH.
.MMH.
DDM..
```

## Shadow behavior
Deep shadows lean purple-brown.

## Outline
Dark reddish brown.

## Rim lighting
Cool rim can contrast strongly with copper warmth.

## Ambient lighting
Warm ambient on broad surfaces.

## AA regels
AA with copper midtones.

## Dithering regels
Oxidation may use grouped dither, never noise.

## Veel voorkomende fouten
Bad:
```text
o.o.o
.o.o.
o.o.o
```
Good:
```text
HHMM.
MMDDo
.DDoo
```

## QA checklist
- 50% scale herkenbaar: Ja, by red-orange hue and teal oxidation clusters.
- Oxidation is grouped.
- Highlights remain metallic.
- Outline is local dark.
- No noisy patina.