Grey Sieve in dreams
A mesh tool that separates fine from coarse — the work of letting through only what is wanted.
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 Sieve
A sieve in a dream is the dream's image of selective filtering. The sieve does not change what is poured into it; it lets through what is small enough and holds back what is not. The dream brings the sieve when you are sorting through a large input — information, advice, options — and the task is to keep only the fine grain. A sieve doing its job cleanly is the dream telling you the filter is working. A sieve clogged or torn is the dream noting that your filtering has stopped functioning and either nothing is getting through, or everything is.