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The picture to the right shows all of the bitmaps inside CTL3D (my Windows 9x version). To produce a set you need to produce a 14x13 16-colour image for each item shown. You should also note that Windows changes certain colours in the bitmap to certain system colours:
| Unchanged colours |
| Black (0), dark red (1), dark green (2), dark yellow (3), dark blue (4), dark purple (5), dark cyan (6), red (9), blue (12), magenta (13), cyan (14) |
| Colour | Becomes |
| Green (10) | Window frame |
| Yellow (11) | Window background |
| Dark grey (8) | Button shadow |
| Grey (7) | Button face |
| White (15) | Button highlight |
Hint: Select the text (try Ctrl+A) if you can't read it.
The numbers in brackets are the colours' indices in the standard 16-colour palette. For maximum compatibility (with 16- and 256-colour displays) you should try to stick to this palette. Paint Shop Pro will decrease the colour depth of an image to this palette - choose 16 colours and Windows' palette.
If you work in the changed colours then the images will match the user's colour settings. This is what the standard CTL3D does.
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