[csslib] aliceblue parses to #0f08ff, and Color.peru / Color.antiqueWhite constants are wrong #2677

Three named-color values are wrong:

• lib/src/token_kind.dart: {'name': 'aliceblue', 'value': 0xF08FF} should be 0xF0F8FF. Parsing color: aliceblue prints #0f08ff.
• lib/src/property.dart: Color.aliceBlue is '0f08ff' (same typo), Color.antiqueWhite is '0faebd7' (seven digits) and Color.peru is 'cd85ef' (should be cd853f).

I compared every named color in property.dart against token_kind.dart and these are the only mismatches (apart from transparent, which only exists in property.dart). Parsing peru and antiquewhite from CSS gives the right values, since token_kind.dart is correct for those.

final sheet = css.parse('a{color:aliceblue}');
// printed as: color: #0f08ff   (expected #f0f8ff)