Because you are modifying a system theme file, you may find you'll need to patch the three files needed to enable the running of non-system themes. Download DeepXW's Universal Theme Patcher and run it before you start with ResHack.
Be aware the image file you are working with is a PNG file!!
Working with ResHack.
Download and merge the Take Ownership.reg file into your registry. Download and open Resource Hacker 3.5.2 Beta(the download link is roughly half way down the page in a green box).
GoTo C:\Windows\Resources\Themes\Aero and r-click...
In the standard aero.msstyles the image you're after is 3px wide x 31px high. Using ResHack or Restorator '07 the image is #891.
If you are using any other/modified theme the number could well be different. If you are using a modified theme, if you like you can zip it up and attach to a post and I'll find the number in there for you.
Because you are modifying a system theme file, you may find you'll need to patch the three files needed to enable the running of non-system themes. Download DeepXW's Universal Theme Patcher and run it before you start with ResHack.
Be aware the image file you are working with is a PNG file!!
Working with ResHack.
Download and merge the Take Ownership.reg file into your registry. Download and open Resource Hacker 3.5.2 Beta(the download link is roughly half way down the page in a green box).
GoTo C:\Windows\Resources\Themes\Aero and r-click Aero.msstyles and then use the Take Ownership.
Drag n drop Aero.msstyles into ResHack.
Expand IMAGE and scroll down to #891 and then expand that.
Click on the "flower" and then r-click it and select Replace resource.
Search and select your new image.
Fill in Resource Type: IMAGE and Resource Name: 891 then click Replace.
On the Menu bar select File and then Save.
In the Aero theme folder you will now have your modified aero.msstyles and the original named aero_original.msstyles.
Right click your Desktop and select Personalize.
Select Windows 7. Once your new style has loaded the Command Module (which is its proper name) will have changed colour!