Mature leaf color
| Code | Term | Description |
|---|---|---|
| 1 | Yellow-green | |
| 2 | Green | |
| 3 | Green with purple edge | |
| 4 | Greyish-green (due to heavy pubescence) | |
| 5 | Green with purple veins on upper surface | |
| 6 | Slightly purple | |
| 7 | Mostly purple | |
| 8 | Green upper, purple lower | |
| 9 | Purple both surfaces |