• Drag/Drop any color from Box1 to Box2
• Color will "snap" to Box2
• Color "snaps"" back to Box1 if never dropped on Box2
• Colors "snapped" to Box2, will now always go back to Box2
• Try Drag/Drop "snapped" colors to bottom of list in Box2

Drop Order with Color Value:

• Check out in JSFiddle
• Check out in GitHub