On Windows XP SP2 and PLD 8.0, when you change the theme from Windows Classic to Windows XP (silver), PLD seems to "loose" color on the window indicators like
Red = Query Running,
Blue = Unsaved File,
Black = Saved File,
Yellow = uncompiled program, etc.

I tried this, and the indicators show up just fine.

What exactly do the indicators show?

I could reproduce this problem using the following steps:
1. Windows classic theme.
2. Start PLD and open a few SQL / Program windows.
3. The indicators are OK right now.
4. Change the windows theme to XP Silver.
5. If you now go back to PLD, all the indicators are silver.

Works fine for me. We'll check it out though.