Mendel's Seven Characters

Mendel's seven pairs of contrasting characters (dominant / recessive):
Seed shape: round / wrinkled. Seed colour: yellow / green. Flower colour: violet / white. Pod shape: inflated / constricted. Pod colour: green / yellow. Flower position: axial / terminal. Stem height: tall / dwarf.
Axial flower position, green pod colour and round seed shape are dominant traits.
Green seed colour is recessive (yellow seed colour is dominant). Note that green is dominant for pod colour but recessive for seed colour.
So the recessive feature is green seed colour.

In Mendel's garden pea, the dominant traits include: axial flower position, round seed, yellow seed, green pod, inflated pod, violet flower and tall stem.
Terminal flower position, wrinkled seed and green seed (cotyledon) colour are recessive.
So green pod colour shows dominance.