Needed: Yellow/Orange Yarn

I promised someone (ok, Beth the roomy) that I would knit her Pasha for her birthday which is slowly approaching. Does anyone have any yellow or orange yarn I can use. I only need a bit and I'm not sure I want to buy some just for this project. This would be a great way for you to look at all those funny leftover balls from projects you have done in the past.

Do you think I can do the white in cotton yarn? I'm not sure off the top of my head if there is wool white in my stash or just cotton. Would that make poor Pasha look funny?

Shhhh, Don't tell Beth about this yarn hunt. She thinks I forgot her love of penguins.