Floral designs are one of the most used in rangoli design. Obviously, we are heavily dependent on nature for our rangoli designs.The next important festivals are Holi and Ugadi in 2013. Holi is a festival of colours celebrating the arrival of spring among other things. There are also many legends associated with it. Probably colours are used abundantly during Holi because during spring we see the colourful flowers blooming every where (It is my opinion or guess!) (Colourful) rangolis will be congruous with colourful Holi.
The next video shows another free hand rangoli. As usual draw the central rangoli design first and then draw the free hand floral patterns and then fill the gaps with designs of your choice to get the final design. Fill with the colours to get the image of rangoli shown at the top.
Holi is associated with colours hence more rangolis are available in Margazhi kolam collection that are colourful and the post on Pulli kolam designs has some rangoli with dots.