making film is complicated and can be expensive. It is possible, but not really for motion picture film uses. There are too many precision requiring steps.
If you want to achieve nice looking footage relatively cheap, just buy modern color negative film for 16mm camera and buy process+scan package for it. Processing costs money, but can be still relatively cheap (like $0.4/ft., including good quality HD telecine).
By going DIY route you won't get the results you asked for in the first post. Period. Manufacturing color film at home is not possible. If some sort of black and white film with its own home brew characteristics (it won't be perfect, it'll have its flaws) is enough, sure, you can dedicate years of your life to this endeavor. You'll need solid knowledge of both electronics and chemistry and you have to be comfortable with designing machines and sourcing parts for them and then building things with your own hands using different tools. In five years you might have some sort of film manufactured, then you'll have to find a way to get it slit and perforated with good enough perforations in order for it to run well in your camera and give you stable image.
If your passion is making films and not engineering/chemistry, I strongly suggest just buying a K3 and some film for it. Shoot it, process it, telecine it and then decide what you'll want to do next.