Was attempting to tint a GUI Image sprite using its .color property, but it seems like this has no effect. This does not seem to be intended behaviour, considering that SolidParticle, GUI.TextBlock, GUI.Rectangle all have .color properties that can be modified.
Thanks in advance!
Line 14: image.color = new BABYLON.Color4(0,0,0,0);
Changing the color here does not have any effect on the output.