1 neither > nether 1590

1 His garment neither was of silk nor say,

say > {A thin material used for cloaks, etc.}

2 But painted plumes, in goodly order dight,

dight > arranged

3 Like the sunburnt Indians do array

Like > [Like those with which]
Indians > [North American Indians]

4 Their tawny bodies in their proudest plight:

plight > attire, dress

5 As those same plumes, so seemed he vain and light, 6 That by his gate might easily appear;