Nice shot and I loke the overall feel but having only one of two flowers in color bothers me for some reason. One out of a whole field, OK, but one of two...
My immediate feeling was, that you should have left both daisy's with color. But, then I looked at it more...with the color you are bringing the view to focus on the flowers...which are out of focus. I think it would have been better to leave out the flowers all together...you had a nice shot without them.
I like the composition. However, the image looks oversharpened to me, especially in the background. I would have also liked it better, if both of the flowers were in color.