Essentially, post #27 covered the stance generally taken by skinning and skinning related sites.
Call it a 'softening' of the strict copyright law which would have you specifically seek and obtain specific and particular prior permission for any and every pixel combination/arrangement which was not absolutely 100% of your own doing.
If there was any association or similarity or inspiration from another's work then it was/is not 100% and MUST be accompanied by written, verifyable consent.
The 'absolute' is untenable, as, for example, it could then be argued that exactly ONE glassy buttonned work would be allowed but ALL others were derivations and must be rejected.
The adherence to any law of any sort cannot be a blanket absolute, as their adoption must be practical and workable in conflicting circumstances NOT covered by their 'inclusions'/sphere of reference.
Consequently, as stated above, when someone submits an eyeball icon for Photoshop [albeit glassy] it is assumed it has been derived from the original included graphics FOR that proggy, unless stated otherwise.
What is desirable is that any work submitted, be it a Wall, OR an icon be sufficiently documented to declare its ancestry......in other words if it's fan-art say so and link to the source material. If it's an icon of obscure heritage being 'utilised' to create a LiteSTEP shortcut again make a note and link to its source.
This sort of additional documentation 'may' be a pain in the ass for people but it makes the submission's heritage 'transparent' and means that if and when the originator of a work takes umbrage with its re-use the ownership and its rights are clear and evident....and can be addressed.
The argument of pedantry that usually surfaced at Devart over this sort of issue usually resulted in some prat claiming God created EVERYTHING and all things are stolen from him......
Reality demands a sensible approach to what is NOT a simple argument.
Every day the admins at Wincusto have to deal with all the permutations/interpretations/opinions of what constitutes 'copyright' and what is 'fair use' and every single person will have his opinion which of course is the only correct one.
However, what ultimately determines what does or does not successfully make it onto this site is a combination of what the administration determines is salient along with what the resultant members are happy with submitting.
On a site with no policing of submissions you will get incontrovertable issues [measured by 'our' community's values], whereas on a site such as here, Wincustomize.com, the worst you will get [hopefully] is something which does not always gel or sit well with one's black-and-white concept of absolutes, but is a working interpretation of what is generally wanted and accepted by our specific community as a whole.
So.....read my earlier post....and this one.....and if there are any further examples needing clarification, - ask any of the admins for their opinion/interpretation....
If this ideology is abhorrent to your personal values then I'm sure there is a still-born community out there for you somewhere which has already expired under its own reluctance to bend before the winds of reality...