Clear, colorless, like window glass. Used for spores or other microscopic structures.
Rod Tulloss believes that hyaline should simply mean transparent (like glass) without any requirement of colorlessness. With all due respect, that would just mean that everything viewable under a microscope would suddenly become " hyaline", and the term would use all usefulness.
Kibby & Fatto(1990) report that vinaceous has been used historically for a large range of purplish colors, but right now it seems to be pretty much restricted to the sense in which it is used in this website.