If you've changed your TCColorArray setting in the terminal to make the ASCII colors actually usable, either by hand or using the wonderful TerminalColors application, you'll be upset when you upgrade to Leopard. As far as I can tell, there isn't a way to customize the default ASCII colors in the terminal. The default blue color is ridiculously hard to read on a black background. I've upgraded to Leopard on my PowerBook, but after playing with the terminal for a few hours, I've decided that I can't upgrade to Leopard on my Mac Pro yet. At least 90% of my day is spent in the terminal, making this a complete show stopper for me If anyone has found a workaround, please let me know!