Wasting lots of time and getting nowhere!
I managed to somehow stumble through a few minor edits in the Launcher.apk by relying purely on colour replacement tools but that was messy and I tried to be more accurate and do something that works and looks how I want. Unfortunately it doesn't seem to matter what I do now on any .apk PNGs they don't work. I resign them when I'm done, push to my phone and nada. It either fails to load or half loads then throws up a ton of acore FCs so clearly I'm doing something wrong. Perhaps someone here can point out what I'm doing wrong if I list what I do.
unzip .apk and find image to edit.
Pull image into Photoshop
Change image as needed / wanted
Save file (I haven't touched any .9s yet)
zip the lot back up, rename to .apk and sign
Push file back to phone, reboot.
I've tried pushing the file while in recovery and while it's been running, neither makes a difference and I have little enough hair without resorting to pull it out :| I did just notice in another thread where Ted mentions using Paint.NET to pry open those damned indexed files. I'm going to look at that but earlier if it was indexed I ended up opening it then manually cleaning it up before making sure it was indexed when I saved it again.
That's about it. If anyone can offer insight into the cause I'd be most appreciative