That really looks like a pattern best worked in intarsia. I wouldn't use bobbins, though--just a long strand for each. If it gets tangled, it's so much easier to slide out rather than try to untangle bobbins.
"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