Upon logging in (has happened once) and being told the game was ready I had a grey screen, when I moved my mouse the screen began to alter colours and eventually had vertical lines of multiple colours. Opening my inventory removed this.
Also having logged in twice with a HEAVILY saturated screen (presumably from low blood)I went into my options screen to have a look at my settings to tweak them, upon leaving my options the screen is fine and my vision is normal again. {F28286}