Why does twain spend so much time on Grangerford's physical appearance and what does his description suggest about grangerford and his values

Huck is quite taken with Colonel Grangerford, whom Huck describes as a powerful, well-respected and honoured man. Colonel Grangerford is a character foil to Huck's Pap who looks weak and is completely disrespected by the community. Huck is quite impressed with Colonel Grangerford.