Assuming you don't want to just switch on the stripeRows boolean on Ext.Grid.Views, check out the Theming guide. Thet talk about changing global variables in sass about halfway down the page.
(The variables you're looking for are in _grid.scss: $grid-row-cell-background and $grid-row-cell-alt-background.)
$grid-row-cell-alt-background is not working for grouping grid
$grid-row-cell-alt-background is not working for grouping grid
@Alane
Thanks for your response.
I've tried with $grid-row-cell-alt-background but it's not working for grouping grid. And my requirement is i've a container with items as one more container, grouping grid and normal grid panel. The container color should be cyan, sub container color should be gray, grid's even row color should be red and odd row color should be green. It should be applicable to all grids and arid headers and grouped headers. How can i achieve this?