You can get a better glimpse of this on the next-to-last
page of the movie storybook. Because he's riding Destrier, whose
large head is in the way, we can mostly only see the sleeves, a
bit of the neck, and trousers.
The main fabric that
makes up the whole tunic and outer sleeves is a soft cream tan
color, with diamond shapes in a darker tan printed on or perhaps
in the weave. We can see the pointed collar of the olive green
undershirt at the neck.
The tan/cream sleeves are large and gathered into the armscye
and the long cuff, and almost completely split open at the front.
We can see an olive green sleeve of the shirt underneath, rivalling
the outersleeve for fullness. The outer sleeve looks to be fully
lined in this color as well, and on the edge trimmed with a looping
He has dark tan trousers with a small raised diamond pattern,
possibly a matelasse fabric.