Well, it's hard to tell from what they gave you. They should also have given you a chart of the spectrum in nanometers (nm). If the blues are at 420 - 460nm and and the whites are at some combination that peaks around 500 you should be fine. It's the green - yellow part that I've heard cyano
loves. But, from a paper I just found it's actually the Yellow-Red spectrum.
Distribution in a Benthic Cyanobacterial Mat
"The highest activity occurred between 550 and 650 nm, with maxima at 580 and 650 nm."