Awesome on the font. As to the text color, just try it black as an experiment then try a few others to see how it affects your eyes. You can try it with the color change prior to the font change.
It all has to do with eye strain and discomfort from the extra work on the eyes.
If your site uses a dark background, you should display your paragraph text in gray tint. This won’t put as much stress on the user’s eyes because gray text isn’t as bright as white text. It’ll reflect less light, making it easier to read. Keep in mind that if you’re reading text in a dark room where no light is present, white text on a black background isn’t as hard to read. This is because no light is reflecting
off it in a dark room."