Changing Start Menu Background In Xp With Reshack

[Kamiwaz]

Hello i'm looking for changing start menu background in using reshack.I searched in many sites and forums but I doesn't find solutions.I want to change background color of start menu panel (cf attachments) in modifing shellstyle.dll of my theme with reshack ONLY.But i don't khnow which attribute i must have changing.I made several attempts in changing RGB color of all attributes named "background" but it's other background which changed.I don't find the command i must have to change.Can you help me?Sorry for my english.

my attachment doesn't have uploaded so i still try