Converting Windows color schemes to different formats for old Windows versions


Windows NT to Windows NT 3.x/Windows 3.1x
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Using main.cpl from an early Windows NT 4.0 beta allows you to open a Windows 3.x colors control panel where you can save the applied color scheme as a 3.x color scheme.

Open the Control Panel.
Click on the Colors icon.
Click the color palette button and then click Save Color Scheme.
Type in a name for the color scheme.
Go into the Registry Editor and go to HKEY_CURRENT_USER\Control Panel\Color Schemes and export the color schemes to a reg file.
Open the reg file in a text editor and copy the string from the color scheme you want to add into Windows 3.x.
Open CONTROL.INI and add the color scheme like this:

Brick=42,D2E0E1,FFFFFF,0,A5BFC2,0,80,61898D,D2E0E1,A5BFC2,A5BFC2,0,D2E0E1

Open the control panel on Windows 3.x and select the color scheme.

Windows 3.x to Windows 2.x/1.x
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Open WIN.INI and copy the [colors] section into the Windows 2.x WIN.INI's [colors] section.
Because the color scheme system doesn't exist in these versions you must apply the color scheme you want on 3.x first. 

Windows 3.x to Windows NT
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Go into CONTROL.INI and copy the data from a color scheme.
Go into the Registry Editor in Windows NT and create a string and paste in the 3.x color scheme data.
Open the Control Panel.
Click on the Colors icon.
Select a color scheme and then exit the colors window.
Open Display Properties and save the color scheme. 
Note: This won't change font or window sizes so you should select a theme like Windows Standard before applying the 3.x color scheme.