# What does NextSeq 1000/2000 status bar color mean?
The NextSeq 1000/2000 instrument includes a light-emitting diode (LED) status bar beneath the touch screen monitor that surrounds the instrument. The status bar provides an at-a-glance indication of the instrument state. The light color progresses as the system moves through its workflow.
* **Blue and purple**: indicate interactivity (eg, pre-run checks)
* **Multicolor**: indicates notable moments and data (eg, sequencing completion)
* **Red**: critical errors
The image below shows the different LED indicator light settings on the NextSeq 1000/2000, showing loading, pre-run, sequencing, completion, and error.\
Reference: [NextSeq 1000/2000 Product Documentation](https://support.illumina.com/downloads/nextseq-1000-2000-product-documentation-200027171.html)\
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