Nice job! The music and overall aesthetic was very nice and relaxing (until I hit the gust of wind lol then I felt trapped)
A couple nitpicks:
The gust of wind seems to get more powerful the longer you take to fight it? The first time I played I wasn't sure what key to press at first and by the time I figured it out it was like I got pushed too far and couldn't reach the rainbow. Tried refreshing and made it through instantly.
The yellow text on the white cloud background was kind of hard to read (could be my monitor). Maybe give it an outline or move it below onto the grass so there's more contrast?
Overall, great job!