So without going into to waaaaaaay too many details. I have a certain tee shirt that is my favorite evening attire. A couple weeks ago, I had neglected my laundry and it was in the washer. I had a different shirt on and went to pick Freckles up for our evening TV time/play time. She wanted nothing to do with me! Tried to shred the shirt sleeve.....even growled. I didn't push the issue, let her "stew" in her cage. Put the old shirt, now clean, back on......she's happy, interactive, affectionate. Same thing happened last night....this time, she nipped me. So here's my question to the group.....can these birds detect color? The favorite shirt is a pale green. The hated shirt is dark brown. Coincidence?