Spider are apparently absent. In some species, the exocuticle of the legs and prosoma is modified by a tanning process, resulting in brown coloration. Bilins are found, for example, in "Micrommata virescens", resulting in its green color. Guanine is responsible for the white markings of the European garden spider "Araneus diadematus". It is in many species accumulated in specialized cells called guanocytes. In genera such as "Tetragnatha", "Leucauge", "Argyrodes" or "Theridiosoma", guanine creates their silvery appearance. While guanine is originally an end-product of protein metabolism, its excretion can be blocked in spiders, leading to an increase in its storage. Structural colors
Garden sharing over 40,000 members. Although this is a number that have registered since 2009 when the social enterprise was first publicized widely, since then its activity has decreased. Scotland, has only one project, a charity called Edinburgh Garden Partners which has over 60 gardens throughout the city shared by volunteers. The charity aims to promote locally grown food and the skills of doing so with supporting older and disabled people who can no longer manage their garden. In France, Prêter son jardin ("Garden lending") is a garden sharing web site started by a journalist in 2010. Garden sharing projects are also