I just had to change the code in your Command4_Click event:
VB Code:
  1. Private Sub Command4_Click()
  2.  
  3.   Dim l As Long
  4.  
  5.   Randomize
  6.   b = 1 + Int(Rnd * 99)
  7.   Text1.Text = b
  8.  
  9.   Label20.Caption = " Nobody's got the " & b
  10.  
  11.   For l = 0 To Label6.UBound
  12.     If Label6(l).Caption = b Then
  13.       Label6(l).BackColor = vbRed
  14.       Label20.Caption = ""
  15.     End If
  16.   Next l
  17. End Sub
Not only does this look alot tidier but it fixes the problem of only one cartoon being highlighted for a raised number. I replaced the RGB function with vbRed simply because I tend avoid it's usage where possible.