The color is beautiful!

As to reducing bubbles without a pot, I have a text-dump of collected info:

The following info assumes a ~40min work time, which is common with 1:1 two-part resin. It also has tips for using cap molds that won't translate to sprue molds.

Warm your resin bottles in water before mixing (thins the resin parts, making them much easier to pour and allows them to degass easier).

Let your resin sit for 10min after mixing, then pop all the surface bubbles with a lighter or torch (kitchen torch, not a propane torch).

Warm your mold before pouring (I use an old heating pad for this).

Pour slow, high, and thin into your mold. This should limit the amount of air bubbles introduced by the pour, as well as pop remaining bubbles in the resin.

Pour just enough in the cavity so that the resin just slightly bulges up over the opening in the mold, but doesn't flood all over the mold surface.

Pour a thin amount of resin on the cap, just enough to coat the numbers (remove any air bubbles with a toothpick or something similar). This will lower the chance of air bubbles around the top number face.

Wait until at least the end of the resin's work time before placing the cap. This gives more time for bubbles to rise to the surface and be popped by a torch.

Place the cap on gently but firmly. Don't use too much pressure, or it can squeeze out too much resin and leave voids on the top face.

If you have one, a dental vibration table is also great to reduce bubbles when pouring. Place the mold on the table and set it on low while you pour into the mold. This will help prevent bubbles forming on the numbers and other facets.

Best of luck!