Syko, yeah I'm afraid I used 020 and higher libs and no AGA means no copper background.
I developed this for my A1200 and then public versions followed.
EDIT: Just been checking out if I could replace the 020 libs but ScalOS min requirement is a 68020 so I'm afraid it's definitely no to 68000 support.
The WBlite will work with minimal changes on your A500+ machine (that can be done in WinUAE).