Anchored objects can't be sent to the back...They're always in front.
"Custom" anchored objects are always in front of the text. "Inline" or "Above Line" will be behind following text, but they leave a gap unless you make them the last thing in paragraph and pull them down behind the next paragraph, which may not always be practical.
If you explain, or better post a screen shot of a mockup of exactly waht you want to do we might be able to offer some alternatives.
I have attached the Image. I want to place the Blue and Black Color Box inside the "Analyzing Everyday Life" and I want to place inside this and show the text. I want to anchored it because of reflow in corrections.