Ok I have attempted to use the compiler/decompiler CCF program to swap a high color bitmap for a low color one, recompile it and then load it into the PDA software. (Thanks for that idea by the way Anthony) However, when I run the CCF in the PDA software the high color image is back in a low color format. So now I just need to find if it is the compiler/decompiler or the PDA software which is now reducing the color count.