The following illustration of a priest shows the form Western rite vestments had, before they were transformed under the influence of the Roman-catholic church.
Below is a 12th century Western rite alb, from Italy. It is clearly a pre-20th century alb in that the sleeves are narrow. The striking similarity between this garment and the modern day Byzantine sticharion with cuffs is highlighted here not to imply that the Western rite must follow Byzantine precedents, but to show that the gap is not as wide as many imagine it to be. The Western rite, in former days, was comfortable with silk albs of green, red, gold, blue... We can be concerned to keep the gap between ER and WR as wide as possible, as a matter of ritual purism or ethnic pride, but another path is equally available to us--that of emphasising the original harmony between the two rites. Pastoral service should guide these decisions, and rigid lines in the sand should be avoided. For, all too often, we then begin to snipe at those who cross our precious limits.