Within the Admin Center, we have the option of updating the branding & personalization within Smartsheet. The default account colors use 'Standard Smartsheet' theme which displays the left navigation bar as dark blue and the color background (horizontal top bar) as white. However, if the background or task bar colors are modified, the 'Custom' theme becomes enabled. When 'Custom' theme is enabled, the left navigation bar changes to black. As an admin user, I am unable to change the color. At a minimum, I would like to be able to revert back to the dark blue with my custom background or task bar color selection.