In Format Cells dialog box > Fill tab > Fill Effects > Gradient, there are two grayed out options in Colors group named "One color" and "Preset".
Why they are grayed out and is there a way to activate them?
In Format Cells dialog box > Fill tab > Fill Effects > Gradient, there are two grayed out options in Colors group named "One color" and "Preset".
Why they are grayed out and is there a way to activate them?
The gradient options differ depending on the object being formatted. The dialog will always show all options, but those that cannot be applied to the selected object are grayed out.
In this case, the dialog for the cell fill is a remainder from the Excel 2007 and earlier interface, where the same dialog was used for formatting object fills like chart columns or shapes. This is what it looked like for a chart column fill:
The one color could be applied in combination with the saturation (dark/light). The presets offered several garish color combinations.
In Excel 2010 the shape and charting fill dialogs have changed, but the cell fill dialog still has the old look and feel.
I assume it was more cost efficient to just disable a few options than to create completely different dialogs for the different gradient fill scenarios.