Adjectives for Green:
Nature-related:
* Emerald
* Verdant
* Foliage
* Grassy
* Mossy
* Lush
* Willow
* Olive
* Teal
* Aquamarine
Other:
* Lime
* Chartreuse
* Jade
* Pistachio
* Kelly
* Hunter
* Forest
* Sage
* Seafoam
* Mint
Adjectives for Purple:
Royal/Elegant:
* Amethyst
* Lavender
* Lilac
* Mauve
* Violet
* Royal
* Regal
* Imperial
* Plum
* Indigo
Other:
* Grape
* Orchid
* Magenta
* Heather
* Mulberry
* Periwinkle
* Wisteria
* Fuchsia
* Wine
* Violet-blue
These are just a few examples, and the best adjectives to use will depend on the specific shade of green or purple and the context in which you are using them.