There are now rumours that just like
Paxillus involutus,, this fungus too (
Clitocybe nebularis) can build up poisonous toxins in your body over time and make you seriously ill. (Just a rumour so far)
You seem to be very confused regarding 'yellowing' - this 'poisonous indicator' only applies to
Agaricus xanthoderma the Yellow Stainer, which bruises strong yellow within a few
seconds.
You should have noticed that the gills too did not change to pink or chocolate brown which would suggest an
Agaricus sp. - instead they would have remained an off white to yellowish colour.
Before you start to dabble with eating wild fungi, you need to find yourself a decent reference book such as by Michael Jordan or Roger Phillips and learn key identification points and be absolutely certain you know how to identify the poisonous ones.
Neil.
