There are other colours of golf ball than white, I don't have the slightest interest in or desire to play golf.
But, attached to one of my favourite small forests to go on long solo meditative walks whilst picking wild mushrooms (its a quite good spot to find Russula cyanoxantha, a grey cap, brittle-gilled mushroom, the rest of the fruitbody being white, the cap surface usually grey but I strongly suspect R.cyanoxantha to be a cryptic species complex rather than a single distinct entity, there being several colour forms, and tellingly, different tastes, usually being mild, but some specimens have been noted to cause G.I upset and to have a biting hot taste when a gill fragment is chewed between the lips and tongue in the field (a common and very useful field test for distinguishing certain species, differentiating between edible and poisonous or inedible mushrooms) and in the genus Russula, as with it's close relative genus Lactarius (the milk caps, or milky caps, or just milkies, a hot. burning peppery taste is a frequent indicative trait of toxic or inedible species, not always, but if they do taste that way one must be very careful indeed, although Russula contains species which cause GI upsets at worst, rather than being deadly, with one exception, Russula subnigricans, a species found in japan and china, likely other places in the orient, that one AFAIK does not have the warning peppery biting of a GI irritant, which are generally due to toxic sesquiterpenes present in those Russula and Lactarius which have hot, burning tastes and GI toxicity. R.subnigricans being much worse, because it causes severe rhabdomyolysis, or breakdown of muscle tissue, which results initially in very painful muscle aches and pain, stiffness and difficulty moving, followed by kidney failure as the kidneys become clogged with the debris of one's muscle tissue which has been attacked by the poison in the mushroom, cycloprop-2-ene carboxylic acid and breakdown products of myoglobin plus any haemolysis that might take place, and kidney failure, as well as blood in the urine occurs.
Caused quite a few deaths where it occurs and has been consumed in mistake for edible Russula species.
But anyhow, there is a golf course attached to/intermixing with the forest, quite a large one, and it's studded here and there with silver Birch trees, which form a host for Amanita muscaria, as well as being lined at the edge with a belt of deciduous trees of various kinds, which can attract other mushroom growth. And I often see discarded/lost balls there, and plenty of them are orange or yellow. Don't know if that is just cosmetic/making them easier to see at range, or if there is some significance to the colour of your balls if playing golf.
