In-Plone Theme Editor
Diazo Concept
It is a significant milestone that plone.app.theming is included in Plone 4.2, but creating themes and uploading as zip files is not an effective way to create a new theme. A sensible environment is needed in which designers and administrators can create themes without filesystem access or knowledge of Buildout or Python, whilst still allowing them to reuse and download/distribute (via zip files) themes or progress to filesystem development.
PLIP 1227 describes this needs, and the core work is a theme editor expected to be included in Plone 4.3. The discussion and development work keeps going. Hopefully amazing results will arrive soon.
Plone's Theme Editor from Eric Steele on Vimeo.