Analysis of information sources in references of the Wikipedia article "Esperanto symbols" in English language version.
Green being the colour adopted by the international Esperanto community, usually in the form of either a green star, or a green flag with a white star
Many Esperantists display a habit of wearing t-shirts portraying Zamenhof and declaring knowledge of Esperanto
Many Esperantists display a habit of wearing t-shirts portraying Zamenhof and declaring knowledge of Esperanto
Green being the colour adopted by the international Esperanto community, usually in the form of either a green star, or a green flag with a white star