For those of you curious of what the new team colors look like, here's a small collage showcasing all 24 player colors, plus Neutral Passive and Neutral Hostile.
There are some changes to "original" 12. Blue and Pink are a bit darker, while Purple and Light Blue are a bit more saturated. Neutral Hostile is now pure black - it doesn't even use shades from Alpha Channels. Neutral Passive retains shades of alpha channels. Also, there seems to be a mistake with Dark Green and Brown - they have correct glow colors, but the alpha channel on skins are swapped.
In order of appearance:
Red, Blue, Teal, Purple, Yellow;
Orange, Green, Pink, Gray, Light Blue;
Dark Green, Brown, Dark Red, Dark Blue, Dark Teal;
Dark Purple, Dark Yellow, Dark Orange, Dark Green (version 2), Dark Pink;
Dark Gray, Light Pink, Light Yellow, White
Neutral Passive, Neutral Hostile
That Dark Blue is giving me LIFE! It's so royal looking.
Enjoy the previews =)
edit: for those unable to install WC3PTR and preview the changes themselves as they have lost their CD case with the keys, fear not - if you go to your Warcraft III install path (not the one in "My Documents") and open the ROC.W3K and TFT.W3K with Notepad, you can see your CD keys there. If you have a pirated version, all you'll get is a big failure. Go buy the god damn game you cheap ass goose fuck.