Since the homescreen of Manila is pretty much black & white but those colourful icons really bugged me especially with that terrible green, I really wanted those stock icons to be black & white too. I changed the icons and made a *.cab for this.
Feel free to use this theme if you like it. Note that it will only change the icons of the slider nothing else.
(for more samples take a look at the attachment)
INSTALLATION & DEINSTALLATION
1) Copy the *.cab to your storage card and execute it on your phone.
2) Install it to your device space, not to your storage card!
3) Soft-reset your device.
To uninstall just normally deinstall this application via list of installed applications where you deinstall programs. The Icons will be like they were before again.
I hope you like it.