Dirty Transmission Fluid

How many miles on the current fluid?
Many here recommend an auto trans fluid change every 30k or so.

Back in February I took in my 2006 Matrix for the ECM recall
and the service writer told me my trans had dirty fluid.
I told him that was odd since I had changed it 2200 miles earlier.
He asked if it had been flushed or just changed, I said just changed, he suggested getting it flushed.
I asked how do they flush a manual transmission.
He said “um…they power flush it”.
No thanks!
“And your power steering fluid looks very dark…”

Note: I wrote this before I saw Steve’s post!