I could not find anything described how to enter the field Number? Then a collector can be creative, right? Especially with the experience of the considerable loss of time it takes to find a missing Cigar band in a (very) large series with the current structure and possibilities.
The (creatively inspired) coding in the field Number was to be able to sort the cigar bands in that (big) serie in a logical order. I see someone has removed some. Thank you (...)
Where not removed it allowed me to understand better the sorting. Case sensitive. first the capital letters, then the lower case letters. Without my creative experiment, no one would be able to guess it.
I did not get a message that it was against the unwritten rules. Colnect's automatic messages no longer reach me (I think this has something to do with all that other problems on Colnect over the last 3 days).
Were removed, sorting on number gives now again in the sequenze 1 - 1 - 1 - 1 - 10 - 10 - 10 - 10 - 2 - 2 - 2 - 2 - ...
Within the same number, sometimes the yellow first, then the blue one ... sometimes the white one first, then the green one, then the red one ... Quite chaotic is my impression
If i choose the sorting option 'Number' i would expect 1 - 1 - 1 - 1 - 2 - 2 - 2 - 2 - 3 - 3 - 3 - 3 - ... With the different colors always in the same order.
Not so. So be it.
For the rest: I don't think putting the Color information in the Description (free text) is an improvement over a dedicated field. It is a huge drag on the user experience.
I rather consider the 'Size' field redundant. The information size could be placed in the Description. After all, the Size field doesn't do anything. No search options, no filter, no sorting... It's just a factoid that you have to read in the detail. So, it would be perfectly fine to include the size info in the Description (without any negative consequences for usability). Not for the Color attribute.
Oh, actually, you can put anything in the Description. Two fields is all you need: one for the automatic given Collect Code, and one for all the rest (in a free text field) 
Modern database standards or a kind of AI? lol
Seriously, a Color field (and actually 2 fields: one for the border and one for the wings) could really boost the usability (search and find).
But hey, I'm just a collector, a paying (and active) user, nothing more.