The easiest thing to do is use Android MultiTool from right here on XDA. It makes no difference what ROM you are on. All of the statusbar icons are in the systemui.apk. simply copy the Systemui.apk and he frameworks.apk into the programs "files" folder and decompile it to your PC. Trade out the icons you want, recompile, then replace the old systemui on the phone with the new one. It takes no battery life like xposed does and is relatively easy. The OP for Android Multi Tool has plenty of explanations.
HTC One M8 - Galaxy S4 - Galaxy Note II - Galaxy Nexus - Bionic - Droid X - HTC Touch Pro 2 - Palm Treo 700wx - LG Voyager