Ok so I can't be the only one who thinks this, but the max (lvl 50) penguin pet is disappointing. Normally, pets become a rich liquid gold color on lvl 50, and their eyes look like this: ^^ However, the penguin is not like this. Its eyes stay the same when it's max, but even worse; instead of being that orange-gold color, it's a super-ugly pearl gold color.
So I re-textured it :D
Here's how it looked before:
And here's how it looks now, with my edited texture.
Feel free to download it, save the file and name it Characters, then replace the normal Characters.png image in the game files.
(No offense to whoever designed the penguin texture is intended here.)