The color silver always indicates that you have a strong intuition / psychic ability and you are being encouraged by the dream to use it. The encouragement to use it does not have to show up in the dream, but it can in any number of ways. Firstly by showing a problem you have in your life. In this case, the dream is asking you to use your intuition to guide your own path through the difficulty.
A silver chain is a very strong symbol and means that you are obliged to develop your psychic ability – you are chained to it. Most likely you are to use this to help yourself and to repay your karmic debts to others.
A silver tap would be simply asking you to tap into your own psychic ability.
