I am finding that knitting an item that is a single solid color (no heathering, no varigation, no color work...nada)....is *boring*, ESPECIALLY when its all stockinette stitch.
I distinctly recall having this problem with my Ribby Cardigan -- as the sleeves were a solid gray and the body was also a solid blue, but it wasn't so bad, as it had ribbing to at least keep things somewhat interesting
Right now I'm in the orange pit of knitting with DH's Blinky hat -- All orange stockinette punctuated by a decrease round every few inches. (All of the other dead fish hats were also made out of solid color yarns, but there were rounds of color work or the switching of color.)
However, while it's boring, it's rather tolerable in a way because of the bright OSHA orange color. Unfortunately, my Color Palette cardigan (which is a handspun/commercial sweater) -- the cuffs & yoke are in handspun and the rest is commercial Cascade 220 in ...black.
Knitting up the handspun was a delight. Now, I'm in the black pit of knitting....literally....as I knit rounds and rounds stockinette of black yarn for the sleeves. I feel the light being sucked out of me as I knit. I have yet to even begin the body, which will even be a bigger blacker pit (black hole) of knitting.
So, I'm alternating between the orange pit of knitting and the black pit of knitting until I can't stand it anymore then switch to the other pit. Once I get Blinky done, I shall have to either finish up another colorful project or start a new pair of socks in a variegated color, just to save my sanity.