Change customfield Renderer Type via REST API

As a developer working on a Jira Integration I would like to ease the install process of the integration for our users by reducing the number of manual steps they need to perform. One of these steps is finding the customfield(s) created (and managed) by the integration and changing the renderers from the default of plain text to wiki markup.

It would be super cool if this could be done as part of the customfield creation API call for multiline text (text area) and other applicable types.