Actually, my filters are completely different colors than the base coat. Using a lighter shade of the base coat will simply lighten the base coat itself. I use filters to shift the base coat to another hue altogether. Or shift a panel slightly to make it stand out against the rest of the vehicle.
When I spray Lifecolor OD and it is very much on the pale green side, I apply a yellowish/brown filter to shift it to a more khaki shade.
See the image below.
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