Hello RoDanxxx,
Unfortunately, I will be Rejecting your map.
The theme is somewhat original, there aren't any maps exactly like this, but there are a few based on colours (Colors - Hard, BlueVsOrange - Hard to name a couple)
There isn't really a main build. In the future, try to have one or two main builds that represent your theme, then build the parkour into that, rather than just having jumps.
The parkour has some variation which is nice, but a lot of it does feel repetitive. Try to experiment with a larger variety of blocks and items when building parkour, as well as the way you utilize these, as this will make your map more fun to complete.
The length is good for an expert map, and the difficulty is good for a medium/hard.
Thanks for submitting your map! I hope to see more maps from you in the future.