What I meant was a it would be good to have a scroll bar at the side of the text box, not the list, so the text can be browsed without putting the cursor in the textbox and then pressing the down-arrow.
Perhaps ctrl+left/right to switch focus, like on a webpage? Just a thought. As to my comment about colours - I meant something like a ?blue border round the textbox when it has focus and dull the highlight colour in the list; the remove border and revert to bright highlight when list has focus. Again, just a thought.
Don't know whether it's a bug or by design: when removing a copied item from the list, the selected item becomes the item at the top of the list rather than one of the items directly before/after the one removed. Is that the desired functionality? If deleting a load of items, might it be best to keep the select-highlighter close to the item being removed?
I now have this as a desktop shortcut because found myself using it all the time. Surely Clipman is going to be on the "must have" list for everyone! And, just noticed - if you start it and there's something on the clipboard, it puts it on the list. And if you pretend it's not on, one can just copy and paste as usual! Clever! - it acts like a daemon you can actually control!