The icons look really nice. Please could you upload the edited files?
Sure (as ever, do this at your own risk etc etc)...
The best way to do this would be to pull your own framework-res.apk from your vega, copy in the new icons, and then push it back. That way you're not taking my whole framework-res from (potentially) a different ROM just for the sake of a few icons.
To do that you need to first get your framework-res, so connect up your vega in USB slave mode and then:
adb pull /system/framework/framework-res.apk .
Then grab the icons I used from this zip
Then copy the icons from that zip into your framework-res.apk under /res/drawable-mdpi-v4/
Then copy your framwork-res back to your vega
adb push framework-res.apk /system/framework/
...and finally reboot.
Alternatively, if you want to risk a shortcut you can just grab my framework-res.apk file from here
(Note that this has my own boot screen, and other notification bar theme changes taken from Gingerbread)