Hoi Scrixpt,
Sorry to tell you that your map have been rejected.
Like said above, the Rainbow theme is one of the most overused theme, try to found some more original theme next time ! The build is pretty bad too, the Rainbow is quite simple and unattractive. The parkour is not a good point too, it's pretty repetitive, and floating around the build, making your map messy.
However, your parkour fits the medium difficulty !
Thanks for submitting your map, would be really good to see more maps from you !