I want to write:

.fill(new RadialGradientBuilder()
    .centerX(37).centerY(41).radius(53.625).proportional(false)
    .stops(
        new Stop(0.0000, Color.rgb(0xFF, 0xFF, 0xFF, 1.0)),
        new Stop(0.2033, Color.rgb(0xFE, 0xFF, 0xFD, 1.0)),
        new Stop(0.2765, Color.rgb(0xFD, 0xFD, 0xF6, 1.0)),
    ).build()

...but the builder's stops() method above has no override for Stop..., only for List<Stop>, which is very inconvenient (needs Arrays.asList(...)) and not consistent with the other builder APIs, so I guess that's a bug.