Compatible XF Versions:
XenForo 1.5 BETA 2 required
REQUIRES XENFORO 1.5 BETA 2
This add-on allows you to set a custom css class on BLOCK notices.
Once installed, you'll notice an additional "Notice Class" field, when adding or editing a block level notice.
I've included one style, "stripes".... if you give any block notice the "notice class" of "stripes" then you'll get a striped notice - the colours of which will depend on your forum's style colour pallet.
You can edit the stripes style, and also add your own inside the "stylish_notices.css" template. See the comments for details.
Thanks to @Lisa for her CSS code to produce the built-in stripes notice style.
Note: Floating notices are not supported because the core already allows you to set a custom css class per floating notice.
Remember: This is a BETA add on - whilst it has been tested, you should not use it on a live board.