Titlebar text (also gadget window in 7)
Fonts, Colors, & System Metrics > Colors (Globals) > Glowintensity:int : Increase the number ,try 300 to start
Fonts, Colors, & System Metrics > Colors (Globals) > Glowcolor:color
Windows & Caption Buttons > Aero > Window > textglowsize:int :Increase the number,try 5
Explorer Titlebar text (with explorer ribbon disabled,vsb in non ribbon mode and others )
Windows & Caption Buttons > Aero > DWM Window > Frames > Details > Glows > Text > edit the image
Edit:added picture