how to tell if BTA is bleached?

[snowlynx]

The common BTA sold online or LFS, if it is completely white or cream color without reef lighting, is that considered bleached?

Once reef blue led lights turned on and it is light glowing green, does that mean its normal and not bleached?

I'm kinda unclear of colors when it comes to with and without reef lighting,
what is normal.

Green BTA is green with lighting, Green BTA without lighting is white,
is this normal?

 

[newbie2014]

Don't have a GBTA. But my RBTA is still red when the light is off.