Okay, taking my first foray into customizing Bakugan here. Customizing itself isn't new to me, as I've done Zoids for years, but I'm amazed it took me this long to make this discovery.
First, a Bronze Hades given the purple and red highlights of a regular Hades. I felt the bronze treatment made it a bit dull so I spiced it up a bit.

And now, a show-accurate Wavern made from a Haos Wavern.

Notice anything interesting like, perhaps, the toenails have no paint on them?! That's right! I found a way of stripping off the paint from Bakugan! Not only is it safe to use, but it also leaves the G-power, attribute symbol, and serial number alone.
What's my secret? You'll never guess... Okay...
Sunblock.
Ordinary sunblock! The oils in the sunblock somehow remove the paint from bakugan! If you take a basic washcloth, saturate it with sunblock and use it to vigorously buff the bakugan, it can take off the painted highlights!
Yes, it even strips off Bakucore treatment! Wanna make a regular Alto Brontes without the bakucore splotches everywhere? Now you can!
For example, here's a stripped Alpha Percival. Note the intact Pyrus symbol:

I figured this out from the internets and it really works! Ya learn somethin' new every day, I guess.
So, whatcha think?