RFR: 6434110: Color constructor parameter name is misleading [v3]

[Sergey Bylokhov]

> Small cleanup: the parameter names in the Color(int, boolean) constructor have been renamed:
>  - rgba -> argb, since this is the format described in the spec
>  - hasalpha -> hasAlpha, to follow common naming conventions
> 
> Also adds a basic test for the constructor.

Sergey Bylokhov has updated the pull request incrementally with one additional commit since the last revision:

  lists via "<ul>" is added

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/29734/files
  - new: https://git.openjdk.org/jdk/pull/29734/files/3ae10ac3..f12b4406

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29734&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29734&range=01-02

  Stats: 24 lines in 1 file changed: 12 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/29734.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29734/head:pull/29734

PR: https://git.openjdk.org/jdk/pull/29734