| Code | Definition | Number of Accessions |
| 1 | green - leaf is primarily green in color | 7433 |
| 2 | red - red coloration is regularly seen in the interveinal areas of mature leaves | 152 |
| 3 | dark red - red coloration permeates the entire leaf | 3 |
| 4 | bronze - color is intermediate between red and green | 7 |
| 5 | light green - lighter shade of green than normally seen | 2 |
| 6 | virescent - sharply different colors in the same leaf | 1 |
| 9 | plot is segregating for this trait and a single score is not an accurate description or the variation is outside of the rating scale | 61 |