Some UI elements below are for specific themes, and colour changes may not take effect for other themes. 

• Top Bar - the top navigation bar background
• Top Bar Text - the text on the top navigation bar
• Header Button Background - buttons on the top navigation bar (e.g. Create button)
• Header Button Text - the text on buttons on the top navigation bar
• Top Bar Menu Selected Background - background colour of top navigation bar menu items when selected (e.g. spaces)
• Top Bar Menu Selected Text - text colour of top navigation bar menu items when selected
• Top Bar Menu Item Text - text on top navigation bar drop down menus (e.g. help or cog)
• Menu Item Selected Background - highlight colour on top navigation bar drop down menu items
• Menu Item Selected Text - text colour on highlighted top navigation bar drop down menu items
• Page Menu Selected Background - the background colour of the drop down page menu when selected
• Page Menu Item Text - the text of the menu items in the drop down page menu
• Heading Text - all heading tags throughout the space
• Space Name Text - the text of the current space name located above the page title
• Links  - all links throughout the space
• Borders and Dividers - table borders and dividing lines
• Tab Navigation Background  - the background colour of the tab navigation 
• Tab Navigation Text - the text of the tab navigation when highlighted
• Tab Navigation Background Highlight  - the background colour of the tab navigation when highlighted
• Tab Navigation Text Highlight - the text of the tab navigation  elements when highlighted

Screenshot: Editing the colour scheme