Custom Filter Definition with color property doesn't show up in UI Builder

Steps to reproduce:

1. Create a new filter definition + material with a single color parameter
2. Create a new selector using that filter
3. Try to edit the color

Actual results: The color field shows up as a float field

Expected results: It should be a color field

Reproducible with versions: 

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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