```yaml connectors: X1: pincount: 2 pins: [1, 2] X2: pincount: 2 pins: [1, 2] loops: [[1, 2]] cables: W1: wirecount: 2 colors: [GN, BN] connections: - - X1: [1, 2] - W1: [1, 2] - X2: [1, 2] ```  In this trivial example, how would I assign a color to the loop?