Currently, if you copied a color text from Confluence legacy editor or Jira old issue view description and paste it on the new issue view editor, The color text would not preserve since both editors rendered RGB color differently. 

 

It would be a "Good to have" feature to have this implement in the new issue view. Also, the color text from Fabric editor is kinda limited, by increasing the RGB colors renders from the editor will definitely help in day to day operation for our customer.