With the way you described the problem, there's only three main ways that I am familiar with to apply a style that can includes WB and Tint:
1. While tethering, under Next Capture Adjustments (in the Capture menu), you can set to the "All Other" adjustment menu to the most helpful choice available to you.
2. If working with existing images select all the images you want affected, copy and apply the settings you want on all the images.
3. While importing, you can choose a style to apply during import under the Adjustments panel.
Anyone can enlighten me, but I've not yet learned of a way to create a default style in C1 that automatically gets applied to images without any kind of user interaction, except those listed above (though they do require user interaction in some form).