HOw easy is it to develop colour film at home?
You can get kits to do C41. Principles are much the same as black and white except more steps and usually a higher temperature is used which can be a problem to maintain unless you use a water bath.
With the basic c41 kits there are 2 steps followed by a rinse then optional (but recommended) stabiliser stage
dev (3mins 15 secsonds)
blix (about 3 mins)
rinse
stabiliser (1 min)
Everything is done at a higher temp than b&w (37C/100F). The developer stage is the only critical one, and only then really if you want to use traditional darkroom print methods. For scanning the negs the whole process is very tolerant; my water bath is a bowl of warm water in the sink checked from time to time with a cheap digital thermometer and topped up with hot tap water direct from the tap as the temperature drops.
In many ways the process is easier than b&w as the development temperature and time are the same regardless of film brand, type or speed.
www.dlab7.com (in the UK) who unfortunately have stopped doing E6 still do C41. They're pretty cheap, dev only is 2.95 or 2.49 in bulk, although they only do 35mm for C41. This is odd because for E6 they did 35mm and 120. I was always pleased with their E6 service, a little slow but the films always came back well processed, free from scratches & marks and well packed. Haven't tried their C41. One good thing is they cut their negs into 6's