If it were me, I'd go to the larger bulb.

So you would use a 4W bulb even though it says 3.6W without worrying about overheating?

Just in case you have a similar question in future, the "Bulbs" this forum is dedicated to are the kind that give you tulips.

Yes, I would. In incandescent bulbs, 60w vs a 40w bulb is a large dfference in heat output. In LED bulbs, a 5w vs 3.6w bulb is only 1.4w difference, or not much heat. And, the picture of the fixture in question is just a glorified boob light, and imo it should handle the slight wattage increase with no issue.

HU-867564120: "the picture of the fixture in question is just a glorified boob light..."

The shade is silk, not glass.

What are the lumens and color temperature of the bulbs you bought. You might try these comzler E12 LED Candelabra Bulb Dimmable, Chandelier Light Bulb 4000K Neutral White,40W Equivalent. These 4000K bulbs would provide a "whiter" light than bulbs of a lower color temperature (e.g., 2700K, 3000K) and appear brighter through the shade.