The only plant color change I'm aware of is putting more acid in the soil to change the hydrangea flower color.

I'm taking a docent course at the museum where I also volunteer in the archives and for two years have processed slides in the collection of artist twin brothers, and there is an exhibit of their work up this autumn. There was a tour today offered by the curator of the exhibit, and I had a couple questions and a couple of remarks about the photos I've been looking at that were part of their artistic process. After scanning for a while I went on that tour, then I met with my docent mentor to go through the museum and look at the places were I'm planning tour stops. I also explained my interest in interpreting the building architect (Philip Johnson) and materials along with the art. We had a great session. It started in the library where I was sitting with my daughter when my mentor arrived.

The funny thing that happened is that we three spoke for a few minutes before going out to work on the tour, and mentor explained how course instructor was not happy that I wanted to go to this tour, because it isn't going to be anything I'll be covering in my beginner docent tour phase. The instructor seems to completely forget my familiarity with the material (or how helpful this information will be in entering metadata to do with the slides). My mentor mumbled under her breath "I'm not a real fan of X's" - and I watched as my daughter reached out and put her hand on the table in front of me, then as she pulled back mentor reached out and rested her hand on the same spot. The funny thing is, I knew exactly what that meant but I don't think I've ever done that before. Non-verbal communication is a wonderful thing. :)