Version 4.0 Patchlevel 15 Added Features/Bug Fixes

1. Fix the default background color for new text objects. Used to be that the first color is used. Now the background color of tgif is used as the default background color for text objects.

2. Add SetAltEditTextBgColor(), SetAltEditTextHighlightColor() and UseAltEditTextBgColor() under the Properties Menu so that an alternate background and highlight color can be used when editing/creating text objects. Thanks to Ralphe Neill <ran@oberon.sub.net.au> for the suggestion.