The international queen marking colours code was created to allow beekeepers to mark their queens using a code which all other beekeepers, wherever they were in the world, would understand.
The colours are used to show which year the queen was born in, they also help to enable beekeepers to spot the queen when doing a hive inspection.
|Year ending in||Colour||Mnemonic|
|1 or 6||White||Will|
|2 or 7||Yellow||You|
|3 or 8||Red||Rear|
|4 or 9||Green||Good|
|5 or 0||Blue||Bees?|