We are but it is still not working. We understand that Colorado may allow sellers to simply pay the $0.27 so this may go away soon.

The only answer I received from Shopify was that "we have it working".  Not very helpful.  We ended up doing the same thing - a script to the CRDF as a line item.  We just turned it on today. 

They add it as a line item to the taxes.  Unfortunately, for those of us who use Avalara for tax compliance, this is not how they (Avalara) wants it to be handled.  Avalara wants a $0 value line item added to the invoice, using a code tied to their c...

Avalara's specification for handling the Colorado Retail Delivery Fee calls for a $0.00 line item (with a specific code) be added to the body of the invoice.  Shopify is handling it by adding a line item to the tax total.  As a result, Avalara is not...