Grey Lamb in dreams
A newborn sheep — vulnerable goodness in need of a keeper.
How grey changes the reading
Grey colour layers ambiguity onto the symbol. The base meaning is still there, but the dream is saying you do not yet have the colour information — the situation has not declared itself.
The base reading of Lamb
A lamb in a dream is the dream's image of new, defenceless good. The animal does not yet know it is vulnerable and is kept alive by something larger than itself paying attention. The dream brings the lamb when a new tender thing in your life — a kindness, a project, a child, a returned faith — needs you to stand over it for a while longer. A lamb that has found its mother is the dream marking that the protection is in place. A lamb that has been left out and is being circled is the dream warning that you stopped guarding something that is not yet strong enough to guard itself.