Prerequisites

• [x ] I am running the latest alpha version of MineColonies and Structurize for my Minecraft version.
• I checked the MineColonies/Structurize wiki and made sure my issue is not covered there.
• [x ] I made sure that this issue is not a duplicate of any existing issue.

Context

• Minecraft Version:1.18.1
• MineColonies Version:
• Structurize Version:

Problem description

No way to tell if box has been emptied or filled

Notes or related things

Suggest a flag or color on box that for a stash if you put items in the flag turns red, if some items are taken it is yellow, if all are taken it is green, the opposite for the postbox for deliveries.

Viewers

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There is a separate github for feature requests: https://github.com/ldtteam/minecolonies-features/issues