Why it worked
The video uses a relatable premise (staring at the sky) and then subverts expectations by showing a creative, visually appealing interpretation of the sky as a canvas for art supplies. The use of popular marker names and colors taps into the coloring and art community on TikTok.
Summary
The video contrasts what a person sees when looking at the sky with what the creator sees, which is a sky filled with color swatches from Ohuhu markers. The creator is shown looking up, and then the view transitions to a sunset sky with various color names and codes floating in it, implying the colors are being used to create the scene.