Stuka spinner colours and unit relationships

[David E. Brown]

Gents,

Is anyone aware if there has even been a published analysis of the spinner colour(s) of Stukas as related to their respective geschwader and gruppen (and possibly staffeln)?

Looking over the many extant photos covering the entire war period, there appears to be a relationship between units and spinner colours (single, multicoloured, varying band/ring widths, hierarchy, etc.) that differed from unit to unit. It also appears that these markings showed little change over the years.

Any thoughts or guidance on this topic is appreciated.

Cheers,

David