Our team use a physical board with sticky notes of different color to indicate the card types (bug, story, etc).

The same cards are maintained in JIRA Agile where we have replicated the colors based on issue type, using the board options page. However the JIRA issue type icons (have a different color scheme) still show - making the board a more confusing collection of colors.

Suggest to add a board option to hide the issue type icon to improve readability.