you should color Arthur a little brownish grayish or just brown.
Green :) I love Arthur Bowen :)
His hair was brown.
turquoise
His hair was brown.
Arthur is a name, which makes it a proper noun. Proper nouns are indeed capitalized.
blue
his favourite colour was light green
In popular Arthurian art work he is portrayed as being Caucasian.
The Redheaded League (Sherlock Holmes) By Sir Arthur Conan Doyle.
Arthur J. Barbour has written: 'Painting the seasons in watercolor' -- subject(s): Water-color painting, Technique, Seasons in art
The stage directions do not specify a carpet, much less its color.
There is no color you "should" dye your hair...it's whatever color you want to dye it!