> changing the colors would have only attenuating effects (the music is still playing but a trained ear of some can discern some distortion) What is this refer

> changing the colors would have only attenuating effects (the music is still playing but a trained ear of some can discern some distortion) What is this referring to? For most pieces inside the radio, the colors would be just superficial and not have any effect. There are some components (capacitors, resistors) where the colors have meaning, and changing them could lead to overcurrent and fires/damage or insufficient conduction and things not really working. I'm finding it hard to imagine what parts the author is thinking of where changing the colors would have only attenuating effects, where it would take a trained ear to hear the distortion. In the set of all outcomes from changing just colors, most would be either "nothing happened" or "radio's operation is clearly messed up". The author's scenario seems like one of the less likely ones.