When a creeper is about to explode, it begins an animation where it flashes and inflates. Before, the flashing was very subtle, but as of 14w06, it flashes completely white, with no texture. It looks like a white mask was applied to it without enough transparency.
This appeared in 14w06a/b, and did not affect 14w05b or 1.7 or earlier.
@[Kumasasa You closed this as a duplicate of a duplicate. The ticket that is still open makes no mention of creepers flashing white, and seems mostly unrelated. I figured opening a separate ticket for this issue would ensure that it gets resolved in case the fix for the lighted-mob issue does not resolve it. Please either re-open this issue or re-scope the lighted-mob issue to account for this as well.
This doesn't appear fixed in 16w02a. Maybe the white effect was made slightly more transparent, but it's still ugly flashing instead of the smooth subtlety of 1.7.
@[Kumasasa You closed this as a duplicate of a duplicate. The ticket that is still open makes no mention of creepers flashing white, and seems mostly unrelated. I figured opening a separate ticket for this issue would ensure that it gets resolved in case the fix for the lighted-mob issue does not resolve it. Please either re-open this issue or re-scope the lighted-mob issue to account for this as well.