Opinions Needed

I have almost two balls of Debbie Bliss Cotton Angora left over from Charlotte's shrug that I'm trying to decide what to do with. The yarn is the same gauge as the Mission Falls Cotton so I'm considering Kerrie's tank for Charlotte. The tank would be all one color. The only problem is I'm not sure if I should use the yarn for another solid colored Charlotte sweater. Is it wrong to have two articles of clothing made up of the exact same yarn?