Is it possible to make design changes to the Print Estimate window?

It is only possible to make changes to the design of the Print Estimate window via custom skinning.  You can have 100% access to the css of the print estimate modal via custom skinning.  If you do not currently have custom skinning and are interested in adding it to your account, please submit a support ticket.  Our support staff can provide you with information about and pricing for custom skinning.