Ya know neale, I have the same problem with that Humane society commercial. I cry every time i see it. I am talking every time. I'm a theist, so I dont usually adhere to the new agey stuff. I looked up the significance of the color indigo the other day and found something interesting. The color indigo holds a special place with many of the Israeli community. Here's a little of what i found on wikipedia:
According to several rabbinic sages, blue is the color of God’s Glory.[3] Staring at this color aids in meditation, bringing us a glimpse of the “pavement of sapphire, like the very sky for purity,” which is a likeness of the Throne of God.[4]. Many items in the Mishkan, the portable sanctuary in the wilderness, such as the menorah, many of the vessels, and the Ark of the Covenant, were covered with blue cloth when transported from place to place.[5]
A set of tzitzit with blue techelet threadThe Flag of Israel has two blue stripes and a blue Star of David against a white background. An early Zionist poem explains that the color white symbolizes great faith; blue the appearance of the firmament.[6] (The original dark blue stripes were later lightened to heighten visibility at sea.) Because of its association with the State of Israel, blue has become very popular in contemporary Jewish design. Modern tallitot, especially those used by Religious Zionist Jews, often have blue stripes on a white background instead of black stripes common in Haredi communities.
In modern Hebrew “blue-white” (Hebrew: כחול־לבן) is used a synonym for “Israeli” as an adjective, especially for local produce (as opposed to imported).
I dont know if it has anything to do with 'Indigo Children' but it is apparently important to many Jews.