Can I change Mattermost look and feel?
Yes, you can change the theme of the Mattermost interface by following the path:
(Menu) ≡ → Account Settings → Display → Theme.
Mattermost provides you with four options to choose from or else you can also customize your own theme or import theme colors from slack.
For further assistance, ask other users and QNAP experts in the community. Go to QNAP Community