@SoulBlade that is exactly how to do it, the only way easier might be to use filebox?

Make sure root access, view images and show hidden folders are enabled in the filebox settings. Navigate to your new icon in filebox, hold your finger on it till the menu appears, select copy and the icon will now show up in the clipboard. Go to wherever your icon needs to be, select the clipboard again and press paste, confirm the overwrite and you're done!

I have a folder in my MyDocs with all the personal theme bits I use that differ from the standard, so that at every update I just run through the folder and I'm back to my preferred setup.

Another really useful feature of filebox is the bookmarks folder, you can bookmark, say opt/usr/share/themes/M4riNa-D4rK and get straight from MyDocs to your destination folder in 2 keypresses!

I've attached the LockSliderThumb.png from the theme mate, to get yours to show up you can open theme customizer from your general settings, scroll down and (without changing anything) select 'Apply Changes', that should clear the image cache without you needing a re-boot.

@P I think I exhausted every possible number that wouldn't work... because for some reason every one I try now does!! Sod's law

@All Dany-69 has been writing a script to make things easier in terms of the installation of pixmaps icons and widget images, it's not ready yet though. As soon as it is you'll know about it!

Either way I've re-done quite a lot of the theme/icons just neatening things up, and the alarm bug is now fixed. I think the next update will probably be aesthetic, with the script to follow in the one after that.

Thanks to everyone for your patience

Kind Regards,
D4rKlar