Thank you Aegy for a respond. At least I know a proper name of this "effect" now. Too late here but tomorrow I will look into this Custom White Ballance bussines.  Nice corection too, actually I like a deeper pink background.

I use 100 Iso only and a lens is a 17-55 canon lens what is came with a camera. I guess not a best quality.

seeya  Tunde