LED light different colour than others on LED strip

One of the LED lights on my LED strip is a different colour from what it is supposed to be. This applies to every colour mode I put it on. The colour of that LED doesn’t stay the same when I change the main strip, but it varies slightly, i.e., when it should be yellow its green, when it should be purple its blue. This tends to only occur for lighter colours. Additionally, when I turn the LED strip off (via the wall socket), the two LED’s in front of the differing LED turn red, and then slowly turn off. The strip does not seem to be broken or torn in any way.