I dig the pink one. Silhouettes, particularly of the female form, appeal to me. I own this at 40x36:

(my wife doesn't want it hung in the house - garage or shop is fine, she says)

As to the blue one, I'd have to see it. I didn't grok Klein until I saw an IKB hanging in the SFMOMA. I must have stared at the thing for twenty minutes. That was his schtick - he ground his own paint that still resides outside the gamut of monitors and printing.

I didn't buy an IKB of unknown provenance back in 2002 for, like, $12k. Last I saw, Kleins are in the tens of millions. It was probably a forgery but me and my friends would never know or care. Despite not having a fraction of that in available cash at the time, it remains a regret.