Hi Jessica,
you have developed a great initial Grey box.
Your choice of core colors works really well together, and you have selected a font which is easily read creating an accessible application for your users. (it is slightly difficult to read the "team charlie" but I think this is just an upload error your screenshots show it differently). Whilst your choice of click colors assist greatly with identifying the navigation i am concerned that to many colors are used in the buttons detracting from your overall consistency.
In regard to menu panel. it feels a bit funny positioned in the left corner. maybe this menu could have run the whole left side for aesthetics.
All this said you have made an exceptional start great work.