I am very interested in the s-expression stylesheet format. I think it would be preferable for me at least to CSS, especially the code for alternating rows; I imagine that people write programs in this language might have well done away with the need for CSS preprocessors that we have today. This also makes me ask a question - why are there no Lisp-like CSS preprocessors?
I am reminded of the proposal to markup webpages with s-expressions rather than XML, though there are packages available (actually just macros) in CL that let you write websites this awy.
There is also LASS[1] for Common Lisp. You use it either as a library for generating CSS, or as a standalone preprocessor.