A channel is often a brand with a logo and color. Adding this makes is possible to use this in (for example) themes, e-mails and in the Integrated backend.
Pages: /admin/channel/integrated_for_developers/edit and /admin/channel/new
Add field "Logo" --> upload field with storage object, using the integrated_image_dropzone formtype --> save logo as a storage object
Add field "color" to choose a color with a color picker (https://itsjavi.com/bootstrap-colorpicker/ "As a component" or advice another one, load with Bower and IntegratedAssetBundle)
Both fields are optional