I have seen this on social media..
- By Hadron
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I remember the "Ultimate Online Theme Kitchen" site from the start of the last decade. But while the website for that still exists (to my amazement), it's not been updated since 2011 so the chances of it working with any vaguely current phone must be nil (and yes, it did require root). But the principles behind it should still apply: modify one of the system APKs (used to be SystemUI.apk or framework-res.apk), replacing the battery icons in that with the ones you'd like to use instead, then package the updates as a flashable zip and flash it. If you are using a custom ROM just edit the relevant apk resources in the ROM and then flash it. I did some of this by hand (rather than via the UOT kitchen) back in the days, but we are talking a decade or more ago now.where have you seen this? icons in the notification bar are part of the system os. i doubt you can just change them at will. you will most likely need to root the phone to do so. now altering the font and app icons are easy to do without root. but not anything that belongs to the system os.
Definitely take a nandroid before attempting anything of this sort: my first ever bootloop was from a trivial theming mod of this sort that didn't work right (if you fork up part of the system resources it's likely the phone will not boot up),

