I'm like many of the others, not normally a bargello fan. Yet this one has got my attention! shows how different quilts can look based on the fabric selections used.
Agree the yellow and white/rose batik jumped at me as being potentially wrong. Also, the pale blue one. Yet as others have said, perhaps that's needed to give a little bit of punch rather than total gradation of the colours?
The whiter one, I wondered if it was because it's the first in the line up? Perhaps moved your strips, keeping in the same order to see if the white is more subtle when next to the other. As it will become as you do your bargello.
Just some thoughts .... and will anxiously await to see your results!