E30 M3 yellow fog lights

Hi,

I'm pretty new to this so I got a few questions regarding the fog lights:

First off, what was the wattage of the original bulbs? If I get 50W H3 bulbs, will I need to beef up the fuse? If so, by how much?

Secondly, for yellow fogs, what combination is best: just yellow bulb, yellow bulb + yellow lens, or simply regular bulb with yellow lens or coat?

Thanks,