However, there are still problems. If I create two terminals fast enough (Cmd-N, Cmd-N), then I get one regular colour Terminal and one who’s colour changes twice. Does anyone have a fix that only changes the invoking Terminal (pass in some kind of ID, like $PPID or so)?

One problem: I don’t like bright background colours. I wanted different dark colours so I could tell terminal windows apart.

So I changed your script to only give me dark background colours. After your global declaration:
– Use a different maximum to keep our background dark
global kDarkColorValueMaximum
set kDarkColorValueMaximum to 20000 — a good max for dark colours

And I changed the set randomRed/Blue/Green to use my constant:
set randomRed to (random number) * kDarkColorValueMaximum

And then I added it to my .profile. Now each terminal window is different.

http://www.red-sweater.com/AppleScript/

“Terminal at Selection” … I couldn’t live without it. I also added some logic that will go ahead and chose the path of the folder that’s selected, if there is one. So you can for instance type-select a folder and hit the keyboard shortcut to jump there.

tell application “Terminal”
try
tell application “Finder” to set theFolder to target of window 1 as alias
if (count of every window) is 0 then
do script “cd ‘” & POSIX path of theFolder & “‘”
else
if not busy of window 1 then
do script “cd ‘” & POSIX path of theFolder & “‘” in window 1
else
do script “cd ‘” & POSIX path of theFolder & “‘”
end if
end if
end try
end tell