Edit multiple Lights Is it possible to edit multiple lights?

For example I have 8 lights. 4 of them need to be red and the others green. Now when I change settings of one of the lamp's color or strength value, the others of the same group should also change and copy the values I have set for the one lamp.

Greetings and Thanks
Select the lamps you want to share the same data, hit Ctrl+L and choose object data. The corresponding lamps will now always copy each others settings.