a { color:green }
b { color:green; color }  /* malformed declaration missing ':', value */
c { color:red;   color; color:green }  /* same with expected recovery */
d { color:green; color: } /* malformed declaration missing value */
e { color:red;   color:; color:green } /* same with expected recovery */
f { color:green; color{;color:maroon} } /* unexpected tokens { } */
g { color:red;   color{;color:maroon}; color:green } /* same with recovery */