Hi,
these are the original OpenOffice.org-2.0.1 icons.
ooo-calc2.png: odc application/vnd.oasis.opendocument.chart
ooo-math2.png: odf application/vnd.oasis.opendocument.formula
ooo-draw2.png: odg application/vnd.oasis.opendocument.graphics
ooo-draw2.png: odi application/vnd.oasis.opendocument.image
ooo-impress2.png: odp application/vnd.oasis.opendocument.presentation
ooo-calc2.png: ods application/vnd.oasis.opendocument.spreadsheet
ooo-writer2.png: odt application/vnd.oasis.opendocument.text