I wanted to do some thumbnails for the bike because I wanted to know what colour/colours would work/look best. The bikes are all the same design, so I am only testing out the colours here. I want the bike to be simple and not have a unique design, which these bikes have. I think all the colours work quite well, so it's more of a choice of what colour would suit the boy. I think the red bike would work well as it suits his character and age.