Purple Knee in dreams
The hinge that lets you walk, kneel, and bear weight — the joint of going on or going down.
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 Knee
A knee in a dream is the dream's image of the joint that decides whether you keep walking, kneel, or fall. Knees carry weight and absorb stress; they are also the first thing to give out under bad load over time. The dream brings the knee when the question of how much further your current pace can be sustained is alive. A strong, moving knee is the dream telling you the walking can continue. A knee giving way, or a knee already on the ground, is the dream noting that the load has finally reached the joint and the upright movement is no longer available.