Here's balloons by day. As you can see they look fairly untransparent but you might notice there´s a low contrast between shadowed and light area´s. This means the balloon probably has a translucent propperty rather then a transparent propperty. This is not something bryce does by default, but we can work around it later. Also notice that the flame´s light effect on the balloon is quite unnoticable in bright daylight.

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(")(")This is Bunny. Copy and paste bunny into your signature to help him gain world domination.