Um no. I said it won’t go away because it is related to the Civil War uniform and that the only change I would see is that they might go to multiple colors depending on branch of the Army. Last time I checked the Civil War was before 1920.
There was no gold stipe in the Civil War, or before 1930, except for General Officer uniforms. The color of the stripe was determined by your branch of service. The Marine Corps wear a red stipe. Why is this? Because they mimiced Army uniforms and the Marine Corps “branch” color was red.
If I remember correctly, the leg stripe provides a distinction among enlisted, officers (thick stripe) and flag officer (two thin stripes).
As for branch colors, they are found on the background color of the shoulder tabs for rank, and also between the gold stripes on the cuff. I believe there is piping around the service cap which distinguishes the branch color.
When my dad was in the service, those areas were orange as he was Signal Corps.