The bicycle is a champion of saving energy: riding a kilometre takes less effort than walking that same kilometre.
Flying down that hill at full speed — I'd love to ride right behind!
Explore the palette: tap a color to see its swatch and associations in the color encyclopedia.
This picture has already been the picture of the day — on .
Every day the catalogue hands one scene to all the players at once: points for it are doubled, and whoever finishes fastest takes the record of the day.
About speed coloring, records and prizes →
Already colored by 22 artists
