for forum: a7 icon

when talking about light forum theme, have you ever noticed something strange about it?

A black square around the a7 cube isn't something you expect from proffesionally done forum, don't you think?
So I made a version with alpha channel, which fixes the problem a bit:

if used, no credit is required, since it's just 2 minutes of work

Thank you a lot, Vadim! I'll let JCL know about it.

Thanks! I hadn't noticed the cube background so far because I was mostly using the black/red theme.