Hey hows it going, before I guess anything it would be great if you could provide some more information: Watering schedule, nutrients, pH, light type, wattage and distance. Oh and If you manage to take a picture with "realistic" colors (no artificial light influence), we might be able to tell you precisely whats going on. Its hard to find a problem using a discolored image with no information. Oh and just from looking at your profile, maybe consider creating an actual diary for your grow? Would be way more appealing for everyone and its way easier to add information there so everyone can see whats going on.
Love and Peace :)