What I expected to happen was...
The creeper flashes and grows then blows up.

What actually happened was...
The creeper grew and had some texture fighting then blew up.
Extra details: It looked like the flashing texture appeared on a different model than the growing creeper model hence the creeper expiriencing some texture fighting at first but then just taking the appearance of a normal green creeper. In other words the flashing model did not grow with the normally textured model. (If the flashing and growing are on seperate models this could cause problems with texture fighting even if the two grew together... try to fix/combine in the same update)

Steps to Reproduce:
1 Let a creeper explode.