Celia the Cement Mixer Truck has brought the wrong paint to the school playground. With a little improvisation Gecko and the mechanicals attach Blue mechanical's paint gun to Celia, as we learn the colours of the rainbow in this educational video for toddlers. Subscribe to Gecko's channel here Gecko's Garage is a big truck cartoon series for children all about fixing trucks and vehicles, including monster trucks, buses, ambulances, construction trucks and lorries.