[Paint Preview] Use Sk_Color consts in PaintPreviewRecorder browsertest

This also gets rid of the IsBetween matcher and uses AllOf(Lt(...),
Gt(...)) instead (which should be more
straightforward/readable/extensible).

Change-Id: I304faac44ce3f0b890e561c77a1438be8182a23c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6851444
Commit-Queue: Calder Kitagawa <ckitagawa@chromium.org>
Auto-Submit: Chris Fredrickson <cfredric@chromium.org>
Reviewed-by: Calder Kitagawa <ckitagawa@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1502719}