Orchid Variations - Triptych

Would appreciate thoughts on the triptych.

I like it alot!!
My only niggle that is easily fixed is: - the white one is the odd one out here because it will be seen against the white background and looks off to me - it detracts from the triptych imo.
I'd choose a background colour with a non-white tone for the white one if this were mine.
Hope that may help.

Thanks Marko. Must now admit I cribbed a bit to show the triptych - did it with Photoshop. The actual images are framed with a three hole matt with tonal difference between matt and print.