You should start drawing b/w if that's how you enjoy working
Poorly colored comics looks way worse than well-done b/w or greyscale, and color theory is difficult unless you naturally have great talent for it T-T (I've been working with color for years and still struggle a lot with background planning and sometimes even coloring backgrounds for stand-alone illustrations)
That said, working with color can also be super fun and rewarding and it does get quicker and easier. I can make a full-color page of an on-going comics (without shading) almost as fast as a nice looking (not just line-art) b/w page
Both full-color and partial does make your comics pop more which can help attract more readers (or build a more appealing portfolio), so I can highly recommend trying it out at least. If you really don't enjoy it, don't worry b/w comics can do great just don't stay away from color because it can look (really, really) awkward while learning!