color is not changing properly when the background of the choice is changed as the item in the Choice are selected.

Step to reproduce
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1) Run the attached program.
2) Select choice using mouse. You can see items of the choice.
3) Select item using keyboard(arrow keys). Has your are selecting the different item in the choice the back ground color change, but you can see the last selected item color is not changing properly ( line around the last selected item).

Example :-
a) Select first item (green) using keyboard. you can see the choice background color is changing to green.
b) select second item(red) using keyboard. you can see the choice background color is changing red but a green color surrounding second item .

If you see the same then the bug is reproduced.

I tested this with b59g to b74.