@BestDeals,
.co is considered as gTLD by Google. I don't know about .com.co, then why don't you go with another rarely used by ccTLD called .com.bz (Belize)? It's also treated like gTLD (.tv, .me, .co) by Google. I own a very premium name under that ccTLD FREE.COM.BZ which has few testing pages I created and its working very fine like .com TLD in google serps. .BZ is technically supported by Affilias Registry so its more stable than other 200 ccTLDs. try out.