Any way to make Endpoint v14 yellow menubar icon grayscale?

The macOS menu bar icon on Symantec Endpoint Protection Version 14.0.0 is a bit of an eye sore (i.e. drop shadows, colors, not pretty... and doesn't follow Apple design guidelines).  I know it might sound like a small "design" issue, but it's a bit intrusive (some went as far as to say it's "rude" from a design POV).  Anyhow, hope it can be changed to a grayscale icon since it's the only colorful icon in my menubar and does stand out poorly...

Guess which one is Symantec Endpoint (hint: look for a drop shadow, gradient, and lots of yellow)?

Thx!