Table grid/borders not changing?

Hello,

I just installed CKEditor Version 3.6.3 on WP 3.4

I can create tables in my page, but the grid lines are so thin that I can barely see them on my white page background when I publish! I tried to change the setting via TABLE-PROPERTIES menu, but I can't find anything about the grid lines thickness, and also when I change the border size I can see the change in the editor, but NOT in the published page?

Thanks,
Valerio

http://wordpress.org/extend/plugins/cke ... wordpress/