Why is MetaRecorder's sample rate/bit resolution orange?

This indicates that the playback sample rate doesn’t match the Scene recording rate. For example, if you’re recording with an input-only device such as Apogee MiC or Sennheiser ClipMic digital at 96kHz and listening through the iPhone’s headphone jack, the sample rate switches to 48kHz during playback, due to the fact that the headphone output doesn’t support the higher sample rate. Don’t worry, the recorded files are still at the higher sample rate.