Albino bud! What causes this?

[BigDog]

I have a couple of Bubba Kush plants in 2L hempys that have an Albino tip. The tip of the bud looks just like the rest of it, even down to the trichomes, except it is white! It looks like it doesn't have any Chlorophyll! Any ideas what the cause is?

 

[420]

Bleaching from being too close to the light.

 

[BigDog]

Bleaching from being too close to the light.

Thanks. That is what I thought might have happened, but these two plants were not the closest to the light (LED) by a long shot, so its somewhat interesting that they got bleached and not the others.