Hello,
Apologies but as we have mentioned earlier, these customizations must be done manually as this is the part of work you do for the Client.
Secondly, the Transparent Header on Mobile Devices is currently not supported out of the box as it requires a lot of things to work together. And due to structural constraints, this cannot be provided as a quick edit, as we will have to work on this thoroughly in order to release this in an Update.
So we request you to please keep your questions only related to the Features currently included with Canvas.
Thanks for Understanding.
Do let us know if we can help you with anything else or if you find any further issues with Canvas.