Custom background colors for copy/move/delete confirmation

[vassapup]

It seems to be very useful to add custom background colors for basic file operations dialogs.

It would simplify distinguishing visually the file operations.

For example, I'd like to add slight red to "delete" , slight orange to "move" and slight green to "copy" confirmations.

Because now copy/move confirmation dialogs seems quite similar, so it is possible to move a files instead of to copy them when mishitting F6/F5 (I do so often in a laptops where no space between F4 & F5 keys).