There's lots of flowers whose colors change with lighting and age of flower -- not a trick of the camera but an actual change of visual perception. It's interesting to see them change throughout the day and from day to day.
Gulf Coast penstemon is what I would call a purplish pink. I was surprised to see how blue these new flowers looked in the morning light -- there was patches of an almost electric blue on them.
These Siberian iris started out a strong blue-violet, eventually fading to a lovely almost sky blue.
Jesse's Song is usually described as methyl violet, which I suppose is a medium lavender-purple. It looks much bluer in the evening than in the middle of the day.
'Veilchenblau' starts out a rosy purple and eventually turns slate-blue. These just opened up today.
Speaking of blue -- the blue grosbeaks returned a little while ago, and just when we were wondering why we hadn't heard any indigo buntings, we heard one singing yesterday. Today I counted 3 different males that had staked out territories.