The temari started with a dark blue thread base. The big flowers are red, pink and white, the stars are yellow and the bursts are white and yellow. The construction lines are gold.
Extra description: an embroidered ball about the size of a tennis ball. The ball is wrapped in thread, divided geometrically with a single thread and then embroidered following those construction lines. In this case, the lines intertwine to form pointy flowers, with bursts of threads between them.
Yes it starts with a core made of fabric scraps, and then wrapped in thinner and thinner yarn and then finally thread.
I would say making the ball itself takes me about an evening, and then several hours for marking and embroidery. I usually make these in short sessions and I finish one in a week or two.