Fibonacci scarf

Here, in TLV, we don't have a real winter. At it's best we got a few rainy weeks and the temperatures below 15°C are considered "chilly weather". But the knitting itching at the fingertips is growing stronger in these months. Generally I'll do nothing and it will pass over. But this year seems to be rather fertile - two men's scarfs and a cardigan for our principessa piccola were accomplished till now.
First, I did the scarf as s gift for a friend of ours. He's somewhat conservative in style, so I tried to make it clear and simple, grey and white:


The pattern is simple: first three rows are grey 1K 1P, finish with a knit. After that (1K 1P) x 8 with a white yarn and (1K 1P) x 32 with a grey. Finish with a knit. Repeat all the rows.
Second one was for my dear hubby. He wanted stripes of black, gray and white on his scarf. I asked him for proportions. "Follow the Fibonacci" he said, "it's a sure thing". Truly, a pattern of classic aesthetics. I've divided the black yarn in two random pieces from the beginning and, magically enough, it was precisely at the needed length for both... It goes like this: 5 stitches in black, 8 stiches in gray, 13 in white and 21 in black. Three first rows and three last ones are black.