netherpro knows the reasons.
Konami: u can also use cmd bar just type: !set life (element) (number)
Konami: Use PROP to change life
this follows in a loop, so the colour goes from sponge colours, then gets darker and becomes green. the life gets large and overflows, the colour becomes white. as life increases greatly it will then transition through a very thin band where the sponge gets darker, returns to normal colours, then gets darker as the loop repeats.
I have the answer. the colour of sponge is based on its life. as life increases, the colour become darker. therefore, as life becomes less, it becomes lighter. when life is negative, sponge gets lighter, tending to white. when life becomes extremely large, there is an integer overflow when the colour is being processed and whatever temporary variable is used for the colour becomes a large negative number, making it white.
turns out netherpro already found all about it. Cool tho.
So I also think there are other points where this middle-color happens and it just switches between the different values making switch colors as the life value constantly changes
I found that at 1431655765 life value it is somewhere between white and brown and very close to its 0 life color.
i put it to 100000000000000 life and it was fully white