R1:6b1e362e0241

Gentle hover state for main menu logo.

Summary: Adds a darker hover color for mousing over the logo.

Test Plan: Mouse over logo, feel the gentle hover wash over me like a light spring rain.

Reviewers: epriestley, btrahan

Reviewed By: btrahan

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4128