There should be a better, cleaner logo…

Black and Green Button (by Markino aka TopoMorto)

In some way This Resemble the WordRoom Logo

And the small one:

This is also based on the WriteRoom logo, although this is a much closer copy, but with distinctive differences - the typeface and colour to reflect the default theme of PyRoom.

And the small one:

NewAge Black and Green Button

PyRoom being better than Writeroom the following icons may be considered as well… (Pi is pronounced /pi/ and not /pai) in most languages)

And the small one:

This is a tango styled icon, based on the idea of it wrote in python (the snake) and the black green colour being the default theme. License = GPL

Large:

Medium:

Small:

SVG Source (all icons) (in a zip as wiki doesn't allow svg uploads):

Here

This time, based on the Writeroom Logo, one with Bitstream Vera Sans as the font (resembling real Writeroom Logo, and one with ubuntu title font.) License = GPL

Large:

Medium:

Small:

SVG Source (all icons) (in a zip as wiki doesn't allow svg uploads):

Here

Here a two screenshots to demonstrate its working :