Could you swap it for water? I find the camelback water bottles make me drink more water. You can sip away at it through the day. Also have you studied individual ingredients? Here is one - Yellow #5
http://www.livestrong.com/article/370945-health-effects-of-yellow-5-food-coloring/
And what is is made out of -
About D&C YELLOW 5 ALUMINUM LAKE: In industrial production of colorants, the term "lake" is applied to pigments or dyes that are precipitated with metal salts such as aluminum, calcium, barium, or others. Most lake pigments are synthetically produced from coal tar or petroleum
Well done for cutting it out of your diet. I really applaud you! You got this. These kinds of drinks stop you from properly absorbing the right nutrients.
I am trying to give up coffee - so I know the feels.