I think it depends on the color range in the yarn. I've made some lovely cabled things with yarn that was variegated in the same shade. If there are lots of colors in the yarn, the cables may get lost.
Try it. You can always take it out if you don't like it.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry