jQuery mobile version upgrade breaks the CSS styles.

jQuery mobile version upgrade breaks the CSS styles.

I am working on upgrading jquery mobile in html pages from v1.3.2 to v1.4.5. However, this upgrade is breaking the CSS styles, colors. This is a major problem because the customer is expecting just the version upgrade and no change in display.

This upgrade changes the themes(color) and few other things. Please observe the differences in the attachments section.

Can someone help me on this?