Dark theme's menu-item hover color is incorrect, in Settings

[stephendonner]

Description

Dark theme's menu-item hover color is incorrect, in Settings

Steps to Reproduce

1. load brave://settings/appearance
2. choose Dark from Brave colors
3. hover the mouse pointer over any of the left-hand side category headings
4. look at the hover color

Actual result:

Expected result:

It should be 737ADE per

See #16111 (comment) and Figma: https://www.figma.com/file/tLXWGCpNoiJxDZDdpfordj/Desktop-Settings?node-id=491%3A13498

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.28.54 Chromium: 92.0.4515.81 (Official Build) nightly (x86_64)
Revision	dba3af0a9a48954c8b188bc641e651580b7cb7b5-refs/branch-heads/4515@{#1162}
OS	macOS Version 11.4 (Build 20F71)

/cc @karenkliu

[stephendonner]

Verified FIXED using

Brave	1.28.64 Chromium: 92.0.4515.81 (Official Build) nightly (x86_64)
Revision	dba3af0a9a48954c8b188bc641e651580b7cb7b5-refs/branch-heads/4515@{#1162}
OS	macOS Version 11.4 (Build 20F71)

Steps:

1. loaded brave://settings/appearance
2. chose Dark from Brave colors
3. hovered the mouse pointer over the left-hand side category headings
4. looked at the hover color

confirmed it's a slightly lighter shade 👍

old	new

Also verified via code inspection: https://github.com/brave/brave-core/blob/447cac3e4cba69397a706e987343bcfe12732a40/browser/resources/settings/brave_overrides/settings_menu.js#L122 - color: #737ADE !important;