
PASS Parse none 
PASS Parse auto 
PASS Parsing garbage value returns none 
PASS Parsing garbage function returns none 
PASS Parse brightness() 
PASS Parse contrast() 
PASS Parse grayscale() 
PASS Parse hue-rotate() 
PASS Parse invert 
PASS Parse opacity() 
PASS Parse saturate() 
PASS Parse sepia() 
PASS drop-shadow() is not allowed in -apple-color-filter 
PASS blur() is not allowed in -apple-color-filter 
PASS Canonicalize grayscale() argument 
PASS Canonicalize hue-rotate() argument 
PASS Negative value for brightness() is invalid 
PASS Negative value for contrast() is invalid 
PASS Negative value for grayscale() is invalid 
PASS Negative value allowed for hue-rotate() 
PASS Negative value for invert() is invalid 
PASS Negative value for opacity() is invalid 
PASS Negative value for saturate() is invalid 
PASS Negative value for sepia() is invalid 
PASS brightness(): values of amount over 100% are allowed, providing brighter results 
PASS contrast(): values of amount over 100% are allowed, providing results with more contrast 
PASS Values of amount over 100% are allowed but UAs must clamp the values to 1 
PASS hue-rotate(): implementations must not normalize this value in order to allow animations beyond 360deg 
PASS invert(): values of amount over 100% are allowed but UAs must clamp the values to 1 
PASS opacity(): values of amount over 100% are allowed but UAs must clamp the values to 1 
PASS saturate(): values of amount over 100% are allowed, providing super-saturated results 
PASS sepia(): values of amount over 100% are allowed but UAs must clamp the values to 1 
PASS Parse filter list 
PASS Filter list with blur is invalid 
PASS Parse apple-invert-lightness() 
PASS apple-invert-lightness() takes no arguments