Vivid Detail, Old-Fashioned Feel
Like most of the Pre-Raphaelite poets and painters, William Morris uses a lot of vivid and colorful detail to describe the experience of all of the senses. Also like the other Pre-Raphaelites, Morris wanted art to go back to what it was like in "the good ol' days," so he imitated medieval language and focused on classic subjects (like King Arthur's court). In other words, if Morris starts to sounds a bit like Chaucer, despite having lived hundreds of years after the guy, don't be surprised.