In the Edit Brush window choose “gradient” and pick up any colors for your gradient. Also don’t forget to specify a base color that should be used, when a gradient is not supported.
After saving you can copy the visual settings for Links from Titles. Or when editing a setting for Links, you can copy the settings for Titles from Links. Whichever is easier for you:
If you need to make the Links look different from Titles, you just can edit them separately.
Here is the result: