After decades of research and billions of dollars, I found a solution!
Code:
Private Sub Form_Current()
If Me.txtMLBTeamID.Value = 1 Then
Me.Detail.BackColor = RGB(237, 210, 24)
Forms!frmCardHit!subfrmCardHitLHPNO.Form.Section(acDetail).BackColor = RGB(237, 210, 24)
Forms!frmCardHit!subfrmCardHitLHPRO.Form.Section(acDetail).BackColor = RGB(237, 210, 24)
Forms!frmCardHit!subfrmCardHitRHPNO.Form.Section(acDetail).BackColor = RGB(237, 210, 24)
Forms!frmCardHit!subfrmCardHitRHPRO.Form.Section(acDetail).BackColor = RGB(237, 210, 24)
Forms!frmCardHit!subfrmCardHitControls.Form.Section(acDetail).BackColor = RGB(237, 210, 24)
ElseIf Me.txtMLBTeamID.Value = 2 Then
Me.Detail.BackColor = RGB(149, 206, 234)
Forms!frmCardHit!subfrmCardHitLHPNO.Form.Section(acDetail).BackColor = RGB(149, 206, 234)
Forms!frmCardHit!subfrmCardHitLHPRO.Form.Section(acDetail).BackColor = RGB(149, 206, 234)
Forms!frmCardHit!subfrmCardHitRHPNO.Form.Section(acDetail).BackColor = RGB(149, 206, 234)
Forms!frmCardHit!subfrmCardHitRHPRO.Form.Section(acDetail).BackColor = RGB(149, 206, 234)
Forms!frmCardHit!subfrmCardHitControls.Form.Section(acDetail).BackColor = RGB(149, 206, 234)
'As so forth until
ElseIf Me.txtMLBTeamID.Value = 16 Then
Me.Detail.BackColor = RGB(238, 188, 38)
Forms!frmCardHit!subfrmCardHitLHPNO.Form.Section(acDetail).BackColor = RGB(238, 188, 38)
Forms!frmCardHit!subfrmCardHitLHPRO.Form.Section(acDetail).BackColor = RGB(238, 188, 38)
Forms!frmCardHit!subfrmCardHitRHPNO.Form.Section(acDetail).BackColor = RGB(238, 188, 38)
Forms!frmCardHit!subfrmCardHitRHPRO.Form.Section(acDetail).BackColor = RGB(238, 188, 38)
Forms!frmCardHit!subfrmCardHitControls.Form.Section(acDetail).BackColor = RGB(238, 188, 38)
Else: Me.Detail.BackColor = -2147483633
End If
End Sub
Perserverance is the key. Especially when the forum does not come through!