Are you looking for items that have a positive environmental impact? When my children were small I knew that the fewer chemicals they were exposed to the healthier they would be. Naturally dyed products generally have a positive impact on the environment. In addition these dyes rarely cause skin reactions.
I do all of my own dyeing and in as natural and safe method possible. Where possible I gather my own plant material as well. I love to use natural dyes for the soft colors and the ease with which they work with each other. Natural dyes are as a rule please and soothing to the eye.