white icon fix after using absinthe fix

After the release of the iPhone 4S and iPad 2 jailbreak on ios5.0.1
using Greenpois0n Absinthe and CLI tool, users have been complaining
about white icons problems. This issue is most affecting stock iPhone
apps such as Stocks, Mail, Safari, etc. The temporary fix for the
problem was to respring the Springboard.

With this new jailbreak tweak named iWipe Cache, you won’t get this problem again.
Clear
your SpringBoard Cache to ensure all images from any theme will work
with WinterBoard. Due to Winterboard being very out of date, It does not
clear springboard cache. This app will ,clear your cache allowing new masks and overlays to be applied to Icons 

Hackerajax says that the problem is NOT because of WinterBoard as described but it indeed fixes white icons issue after jailbreaking.
You of course need jailbroken device, you can follow our guide for A4 devices and for A5 devices i.e. the 
Once
you jailbreak your device, open Cydia and search for iWipe Cache under
ModMyi repository. This tweak will install an icon on your homescreen as
shown in the screenshot above. By tapping on this icon, your device
will respring and white icons problem will be fixed.
Let us know how it gone with you.