Hello,
Sorry to say but that exact change wouldn’t be possible in terms of accessibility. For the accessibility related concern, you can try out any free or paid third party plugin that best suits your needs because we haven’t tested any yet in this regard.
Although, if you want to have a different style for the Menu on your Site then for that you can edit your Header layout under the Dashboard > WoodMart > Header Builder > then under the Header layout, you can edit the Main Menu element > and in that you can change the style: https://snipboard.io/aYpgkw.jpg
Hope this helps !
Best Regards.