| Code | Definition | Number of Accessions |
| 1 | No anthocyanin, stems and leaves pale green | 1355 |
| 3 | No anthocyanin, stems and leaves green | 623 |
| 5 | Low anthocyanin, stems and leaves partly light purple | 420 |
| 7 | High anthocyanin, stems and leaves predominantly purple | 90 |
| 9 | Highly purple | 31 |