Thanks to gege, we now have not one, but 2 icon packs with installers. See details below:
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I wasn't wild about the default icon set in MM 2.x, so I decided to whip up a new set. It is based off the Silk icon set by Famfamfam, though I had to fill in some blanks with icons from other open source collections, and a couple of my own creation.
Gege had been working on this project too separately, so he merged his with mine for an alternate version
This icon set is for MM2.x primarily. It works in MM 3.x, with a few missing icons (waiting for release of an icon list for MM3) and will only look good with skins with lightish backgrounds since there seems to be no support for alpha transparency.
There were a few icons that I could not figure how to change, and some on MM3 that are not documented, so those will still be "old style"
:: Preview ::
Kemie Version

Gege Version:

:: Download ::
Kemie pack for MM2
mm_silk_icons.zip
Gege installer for MM3
Silk_Icons_Installation_gege_mod.mmip
Kemie installer for MM3
Silk_Icons_Installation.mmip
::To install::
.zip file for MM2
In your MM2 program folder, create a folder called "icons". Extract all these icons to that folder. (Re)start MM, and Voila!
.mmip files for MM3
Simply double click the file and confirm you want to install (WARNING: will overwrite any icons you might have in your MM3/icons folder). Restart MM3 to see changes
Suggestions or bug reports are welcome: kemie AT monolinea DOT com
enjoy!
:: Update::
All icons should be working now on MM3. Let me know if any still have a solid background.