Okay, well. The indigo in ur periphical vision signals to me that ur aura/vibration is of Indigo colour. What i know about this is that Indigo children have been incarnated in the physical from the 5th dimenion (or another planet ) and have forgotten everything about their past. It would mean that you are actually a higher being send here in masses to fix the world and reproduce purer children that are more in tune with god/the universe. When the dream suddenly took a change it was a message to tell you that you are now ready to accept this and listen to ur heart in order to do the right thing. From what i've heared there is nothing specific these children have to do except be themselves and their natural vibration will make the shift that is neccesary to the earth.

The beeping noise, that's often heared before transitioning into a dream could be ur former family/friends trying to contact you from the fifth dimension in order to inform you about what is really going on.

Like i said. VERY far fetched. If you want to know more check out this video that is supposedly broadcasting a channeling from the collective conscious : Activation of the Indigo Children - YouTube (starts at 1:00)
Ignore the cheesy music it's the only vid of this message i could find. Please take this with a grain of salt.