MIDI cables are the bread and butter of an electronic home studio, but all too often they are simply black, and it can be a nightmare to work out what device is plugged in to which splitter, or merger, or wherever else. Sticking some electrical tape on the cable ends can help to a degree, but doesn't solve the problem in the middle of spaghetti junction.
The solution is to use different coloured cables, but finding any non-black MIDI cables that don't cost an arm and a leg is surprisingly difficult. Thomann to the rescue!