On my EC2 instance I am presented with a screen where the bottom looks like
Some of the values seem pretty clear to me.
Is there a legend available, or some place that explains this various color coded regions for byobu?
Here's a few samples from the byobu documentation, section Status Notifications:
cpu_count - the number of cpu's or cores on the system; displayed in the lower bar toward the right in the default text color on the default background, followed by a trailing 'x'
cpu_freq - the current frequency of the cpu in GHz; displayed in the lower bar toward the right in white text on a light blue background
disk_io - instantaneous read/write througput in kB/s or MB/s over the last 3 seconds; displayed in the lower bar toward the right in white text on a light purple background with a leading '<' sign indicating 'read speed' and '>' sign indicating 'write speed'; override the default monitored disk by specifying an alternate device with MONITORED_DISK=/dev/sdb, and override the default DISK_IO_THRESHOLD=50 (kB/s) in $BYOBU_CONFIG_DIR/statusrc