Gas canister emptier art issues

The gas canister emptier is known to be a gas equivalent of the bottle emptier. This extends to the ability to be rotated, and even though I see that the rotation makes the outline slightly different, there's no meaningful distinction between the 2 orientations:

Issue #1: Releasing some gas in liquid though makes it immediately apparent that the canister emptier also has a single "spout", and releases the gas only on one side, contrary to what the art implies with its symmetrical appearance with 2 outlets.

Issue #2: When releasing gas, the canister label always switches to white, ignoring the proper color, visible on free-standing canisters, which matches colour-coding in the material overlay. (See above - the emptiers are releasing oxygen)