Base: Improve Silver theme colors

- HighlightWindow text and strip colors now dark blue.
- MovingWindowShadow color made lighter, so that it's more visible.
- RubberBand now has silver colors.

Base/res/themes/Silver.ini

@@ -35,13 +35,13 @@ InactiveWindowTitleStripes=#808080ff
 MovingWindowBorder1=#cececeff
 MovingWindowBorder2=#9a9a9aff
 MovingWindowTitle=#000000ff
-MovingWindowTitleShadow=#000000ff
+MovingWindowTitleShadow=#8d8d8dff
 MovingWindowTitleStripes=#000000ff
 HighlightWindowBorder1=#cacacaff
 HighlightWindowBorder2=#9a9a9aff
-HighlightWindowTitle=#000000ff
-HighlightWindowTitleShadow=#000000ff
-HighlightWindowTitleStripes=#000000ff
+HighlightWindowTitle=#232342ff
+HighlightWindowTitleShadow=#f3f3f3ff
+HighlightWindowTitleStripes=#4e4e7dff
 HighlightSearching=#7cfc00ff
 HighlightSearchingText=#000000ff
 MenuBase=#dededeff
@@ -66,8 +66,8 @@ SelectionText=#f3f3f3ff
 InactiveSelection=#606060ff
 InactiveSelectionText=#ffffffff
 PlaceholderText=#3b3b3bff
-RubberBandFill=#f4ca9e3c
-RubberBandBorder=#6e2209ff
+RubberBandFill=#dfdfdf3c
+RubberBandBorder=#cececeff
 Link=#0000ffff
 ActiveLink=#ff0000ff
 VisitedLink=#ff00ffff