[C2] Exercise : question of type match by dragging : color change when using it

[NicoDucou]

In a question of type match by dragging when opening the question the bullets are of different color for each option :

if you select a bullet and release it, then all the bullets on the left hand side get all the same color and all the bullets on the right hand side have an other color.

Finally if you associated 1 element from the left hand side to 1 element on the right hand side, all the color get back to the initial situation for the left column with 1 color per bullet, but not on the right hand side.

It should always stay with the situation of 1 color per bullet on each side.

[NicoDucou]

Also if you change the zoom, the bullets are not following the item :