Thanks everyone!
I should point out that I only take photos with natural light; no flash. I did not adjust the colour. The photos are a fair representation of the real flower colour. However, natural light does change as the day goes on. Morning sun is much more red. Evening light is much more blue. Sunlight at high-noon on the summer solstice is the purest, whitest light possible and technically, everything is it's truest colour for just a few mid-day hours, once a year, on that day. I did take these photos late in the day; around 6 p.m. If I'd taken the photos at 8 a.m., the colour would've been more pink and not quite as blue. That stunning blue colour was what I got to enjoy while looking at the flowers in person as I took the photos. When I go to the greenhouse in the morning, the blue is not as strong; there is more red and that makes the flowers appear more pink-ish.