The Notes 10 client allows users to change the color theme.
You can also set this up by using the Desktop Settings policy for all or some users.
This You can apply through the new notes.ini setting CUSTOM_THEME_COLOR=<R>,<G>,<B>
<R>,<G>,<B> represent the red, green, and blue values to use as the basis for the theme color.
For example: CUSTOM_THEME_COLOR=128,0,128
To push a notes.ini setting to clients, use the Custom Settings tab in a Desktop Settings policy.
To evaluate different colors for the theme and to see color RGB values, from Notes, click File – Preferences – Fonts, Colors, and Themes. With the IBM Theme selected, click Customize Theme. Next to Choose your theme, click the color box.