The metaphor of border is illustrated really well and I like the use of color in each background, initially I don't know if I succeed in the right way or a bug but it turns out it is the right solution :) Also the jumping is not the same height if you want to jump off when you move forward and caused some frustruation. Got stuck in the level where it seems you have to scale and jump at the same time, wish there will be a playthrough video to have a look at later levels.
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Thanks for playing and pointing out the main problems! It's soooooo true that I really should have fixed the controlling. ( yes in later levels we need to scale and jump at the same time. but even I often fail. ) In fact we can skip the level if interested in the later ones by pressing p! (strange key choice)