[OpenJDK 2D-Dev] RFR: 8252817: Cleanup the classes in the java.awt.color package

[Sergey Bylokhov]

- Class declarations reformat
- Docs cleanup

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Commit messages:
 - 8252817: Cleanup the classes in the java.awt.color package

Changes: https://git.openjdk.java.net/jdk/pull/22/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=22&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252817
  Stats: 142 lines in 7 files changed: 14 ins; 6 del; 122 mod
  Patch: https://git.openjdk.java.net/jdk/pull/22.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/22/head:pull/22

PR: https://git.openjdk.java.net/jdk/pull/22