new to spry 1.4 is the move away from needing to use {ds_EvenOddRow} and the same class names. You can now use the attributes spry:even and spry:odd in your dynamic region

Example:

There is also no need to use them both as a requirement either, so you can set one but keep the other based on your css defaults. 1.4 gets better and better the deeper I go in the documentation!