Style PHP domain objects

[linawolf]

Example in Documentation-rendertest/PhpDomain

These styles use colors that are used nowhere else. Decide how to display parameter lists etc

[linawolf]

http://localhost:63342/render-guides/Documentation-GENERATED-rendertest/PhpDomain/Index.html

[mouflondarko]

Got rid of some background colors & used a different (existing in other places) color for keywords, also decreased font size a bit to make whole section easier to read

As discussed with @linawolf this proposal needs more work to avoid using many colors in text (possibly replace the blue color with gray + experiment with gray tones for parameters or try to emphasize the keyword using a background/decoration)

[linawolf]

I think using dark grey would be fine