Purple Mop in dreams
A tool for wet cleaning — the work of dealing with a spill instead of stepping around it.
How purple changes the reading
Purple colour places the symbol between hot and cool — a reading that has both calm and intensity at once. The dream often uses purple for symbols that do not fit the usual categories cleanly. Take the reading more seriously than you would otherwise; the colour is asking you to.
The base reading of Mop
A mop in a dream is the dream's image of the next step beyond sweeping — the wet work of dealing with what was spilled rather than what was dropped. Mops handle real stains. The dream brings the mop when something has gone wrong recently — a conflict, an embarrassment, an error — and the floor is not going to recover by being walked around. A mop in use is the dream telling you the cleanup is honest and is yours to do. A dirty mop spreading the mess is the dream warning that the method you have been using to clean things up is not actually clearing them — it is moving them around.