Painting the pale pink tulip behind the white one was done using Taylor's Pink Flamingo by American Journey; it is an opaque. If you use more water, though, the pigment will behave like transparents. Its neighbor back there was also a darker pink using permanent rose. Red orange bloom was using Organic Vermilion, a most juicy vibrant orange by Daniel Smith; also used gamboge, permanent red (DV), and Grumbacher Red. The other white tulip is also started.
Stems/leaves were put in with mix of arylide and UB, Prussian, and manganese blue. Remember to always ALWAYS vary your colors. Tony Couch told us at his last workshop here to not go more than 3-4" without changing colors anywhere in a painting.