Dear fellow Acad users.I've got a basic question regaring the use of Blocks. I've made a drawing with 5 instances of the same block, and need to change the colour of just one of them. Is this possible (without breaking the reference to the original block) ?WBR Stian

In AC 2008 you can edit a block by right clicking on the block and enter a editor where you can pretty much alter anything you want, line color, layer etc.

If you created the block on layer 0, as all blocks should,then change one blocks layer or color.

...and if you have not - you can redefine it to Layer 0 -- see:
http://www.cadforum.cz/cadforum_en/qaID.asp?tip=2427