Basic stripes...quick question

If I am knitting a striped scarf…just thin stripes, without having to cut the ends but blend them in, how many rows of each color do I do. For example…knit all…2 black, 2 gray then 2 black and 2 gray…Am I making sense lol? Is that correct?

You can make the stripes however wide you want them to be, as long as you keep them an even number so the yarn is at the correct end.