Color of the central cylinder
The Methuen color chart (Kornerup & Wanscher, 1978) was used to determine the color
| Code | Term | Description |
|---|---|---|
| 1A1 | White | |
| 3A2 | Yellowish white | |
| 4A2 | Yellowish white | |
| 4A3 | Pale yellow | |
| 4A4 | Light yellow | |
| 5A2 | Orange white | |
| 5A3 | Pale orange | |
| 5A4 | Light orange | |
| 5A5 | Light orange | |
| 5A6 | Orange | |
| 5A7 | Orange | |
| 5B3 | Grayish orange | |
| 5B4 | Grayish orange | |
| 5B5 | Grayish orange | |
| 5B6 | Grayish orange | |
| 5C5 | Orange brown | |
| 5C8 | Brown yellow | |
| 6A2 | Orange white | |
| 6A3 | Pale orange | |
| 6A4 | Light orange | |
| 6A5 | Light orange | |
| 6A6 | Orange | |
| 6A7 | Orange | |
| 6B4 | Grayish orange | |
| 6B6 | Grayish orange | |
| 6B7 | Orange | |
| 6B8 | Orange | |
| 6C6 | Orange brown | |
| 6C7 | Orange brown | |
| 6C8 | Orange brown | |
| 6D7 | Light brown | |
| 7A4 | Pastel red | |
| 7A7 | Reddish orange | |
| 7B5 | Grayish red | |
| 7B8 | Reddish orange | |
| 7C6 | Orange brown | |
| 7C7 | Orange brown | |
| 7C8 | Orange brown | |
| 7D6 | Light brown | |
| 7D7 | Coffee | |
| 7D8 | Coffee | |
| 7E8 | Coffee | |
| 8B6 | Grayish red | |
| 8C7 | Brown red | |
| 8C8 | Brown red | |
| 8D8 | Reddish brown | |
| 8E8 | Reddish brown | |
| 9D8 | Reddish brown | |
| 10A2 | Pink white | |
| 10A3 | Pale red | |
| 10A4 | Pastel red | |
| 10A5 | Pastel red | |
| 10B5 | Grayish red | |
| 11A3 | Pale red | |
| 11A4 | Pastel pink | |
| 11B5 | Grayish pink | |
| 12A3 | Pink white |