How to filter map content location/change color

[AnnBensen]

Can someone help me with how to either change the color on the right hand or delete the points out of the boundary on the left? Someone in IT made the map on the right hand side but I need to change the red to be the maroon on the left. I went into the actual layer and changed the color and added the county boundaries but there is a ton of data that falls outside. Thanks!

[Laura]

Have you gone through the symbology tab for that layer and changed color there? Are you trying to do this in something else?