Extend Field Templates
If you find the existing field templates still limited to your need, Modules allow you to add your own field template. In the following sample, we added a field template that provides a Summernote WYSIWYG editor.
Default CKEditor WYSIWYG:
Customized Summernote WYSIWYG:
Get the code here in the SDK: https://github.com/gitana/sdk/tree/master/ui/modules/content-model/content-model-field