The gray colour is a consequence of sunlight and drying. If you apply oil, paint or varnish it will help. Oil (or wood stains which are suspended in a solvent) will retain the wood grain, but will require annual reapplication.
there was a gray cat walking on a gray fence in a gray (or boring as some say gray means) backyard , or it just means your stupid for asking this question cuz it means what it says
Everything is gray
Ying and yang
Maybe it's because you have very dirty eyebrows
rodentia
Sun damage.
Depending on the weather, from six months to one year.
In your late 30's it starts turning gray, for most people.
They protect their home by killing anything that might hurt them.
your fish is turning grey due to lack of protein and lack of proper diet.
Your eyes are probably hazel.
It is probaly because it is getting old.