The options for displaying the Tabs are found in
There are four 'Tabs', each with four options.
The background colour of each of the tabs can be configured to one of the Scout brand colours. The defaults are Scout Purple for the first three and Scout Teal for the last one. Text is displayed in white with links being highlighted in Scout Yellow)(or Scout Blue if the background is itself Scout Yellow). It is possible to choose a white background because of the use of a standard list of colours in the options, and the theme will display the text in black for you if you do, but the tab won't have a border so it might look a bit odd.
Please note that version 6.0.0 overlooked the link highlighting in the tabs and so uses orange from the 2015 colours.
The tabs are configured as widget areas (sidebars) and if you do install a widget in one it takes priority. The second priority is controlled by the second option for each tab. You can specify the ID of a post or page on your site and the title and permalink for that post or page will be used as the text and the URL. So you can easily highlight a particular post or page on your site.
If you are not using a widget or a post or page ID then the tabs will display plain text linking to one of the links defined in the theme. The defaults are 'Beavers', 'Cubs' and 'Scouts' and 'Adult Volunteers' page but obviously the text and URL for these links can be overridden. Any URL defined in Easy Theme Options will only take effect if you also specify the text.