Hi! Thanks for you feedback! Messaging and Telephone icons should be changed by now. Music (I think you mean ringtone) can be changed in future, if you sent me a music that you want to have there, that would be great. I don't know much about changing widget background but if you sent me the Singularity theme, I could try it.
i would love to upload a screenshot of the icons i'm talking about but xda won't let me because i didn't posted 10 posts by now
+++ Found an icon set on the Play Store which i would loooooove to have in your design. It is called "Glyphsy Icon Pack". I would post a link but xda still won't let me+++