Dot 3 or Dot 4

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

My son and I put drilled rotors and new 
ceramic pads on his 97 Cavalier Z-24 tonight.
When I went to remove some brake fluid from the
master cylinder reservoir I noticed the brake fluid 
was green. Is Dot 4 fluid green? The lame instructions 
that came with the pads and rotors talked about Dot 4 
fluid so I'm assuming the newer cars uses 4 instead of 3.
Now the good part, should I try Dot 4 fluid (the green stuff 
I think) in my 70 AMC Javelin or will the Dot 4 stuff eat my
 seals? Any one try this?

Armand