1- If i look at the "FL skin" and the "Live Skin" posted above, it is all very connotative and close from the host they take their name from, but has their own icons, and is nearly more imaginative and good as the model.
So everyone knows it is 'live-alike" or "fl-alike", but not exact 1:1 copy, but something in between a copy and a tribute...
2- in your case, Akoustic, i think your icons were better than many ones i ever saw in existing hosts, so i'm glad you didn't "dare" copying existing icons, but created tyour owns