Vision: I went back and forth on this one a lot. The color is somewhat between the normal color for Koffing and the shiny color and a shade or two darker. The clouds are also darker than normal. Since Koffing as a whole was slightly recolored, I have attributed this to the "originality" section.
Originality: My usual comment aside, I have a mixed reaction in this regard. While the recoloring of Vulpix worked well, Koffing hasn't really gained anything. That's not to say the color scheme is unoriginal or bad, but my score reflects that it's merely neutral.
Technique: After scanning this piece I see no out of place beads. I'll have to start using the term "pixel-perfect" and see if it catches on here.
Impact: Despite the color scheme change, Koffing still has impact. Despite being spherical in nature, the simplicity of design has worked to your advantage. The original purple pops more and the shiny color as well. Thus I reduced the score slightly. The piece works in its own right but I cannot unsee the pop of the original.
Overall, I love this piece.
I love your works, Aenea
Amazing work with Koffing
nice puffs of clouds around him