Color is not claimed as a feature of the mark.
The mark consists of the word "milestones" in lowercase letters with stones in place of the letter "o" in the word "milestones." Above the stone in place of the letter o, there are 8 stones that get smaller as they appear to drift into the distance. Below the stones in place of the letter o, there are 7 stones that get smaller as they appear to drift into the distance. Below that is the text "behavior group, inc.".