Workbench timeline view - select color does not always work

Workbench Timeline View --> Create model for Timeline

When selecting a color from the Chose a Color popup window, we expect the Selected color to be used when you click OK. If you select green (RGB 0,255,0), this does not always work.

Example:
The current color in Create model for Timeline is blue. Double clicking in the blue cell generates the Chose a Color popup window with Green selected. Clicking OK does not change the Create model for Timeline color to change to Green.

Cause:
It appears that even though Green is selected when you click OK, you must click somewhere on the grid before clicking OK will actually cause the color to be changed.

This sequence will allow you to change to Green:
When the Chose a Color popup window is initially displayed (with Green selected) –
click any other color in the grid
click Green
click OK