[Q] Guide to modding on screen buttons? - Sony Xperia P, U, Sola, Go

I want to change the color of the buttons, is there a guide on how to do this?

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Just replace the images in SystemUI. Don't remember the exact ids, but you should be able to find them.

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K900 said:
Just replace the images in SystemUI. Don't remember the exact ids, but you should be able to find them.
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How do I unpack and repack the apk? Signing?
Skickat från min LT26i

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Look up apk tool and apk manager. Pretry simple once you get the hang of it. There is tutorials all over xda on how to use them and modify files..

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wpgchris said:
Look up apk tool and apk manager. Pretry simple once you get the hang of it. There is tutorials all over xda on how to use them and modify files..
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Well that didn't go as I expected. I found the files and tried editing one but that's the part where I'm failing. How do I edit the .png properly? I tried with this result...:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}