Apply the `constructorTagModifier` to the JSON but not the type def?

I have an existing type like this in my Haskell app:

``` haskell
data FooType
= FooTypeEnum { fooTypeValues :: [Text] }
...
```

With JSON serialization defined which outputs:

`{"enum": { "values": ["value1", "value2", ...]}}`

Which is achieved by using the `fieldLabelModifier` and `constructorTagModifier` options for Aeson.

I'm using the analogous option values in `elm-bridge` to get the json encoding/decoding to match up, but the issue is that `constructorTagModifier` applies to both the type definition AND the json encoders/decoders, where I want it to apply to only the latter.

So I end up with the correct json encoding/decoding, but on the Elm side the type definition has the same modifications applied:

``` haskell
type FooType =
Enum { values: (List String) }
...
```

Which causes issues, especially with constructors like `FooTypeInt`, which ends up being defined as just `Int`.

Is there a way to apply `constructorTagModifer` only to the json encoding/decoding?