ColorTool: Restore old console colors after printing the color table

[metathinker]

Unfortunately, when you run .\colortool.exe --current, you might notice that the color of the prompt printed after the program finishes is slightly different from what it was before you ran the program.

This changelist fixes the issue by restoring the old console colors after the program finishes printing the color table.

Testing: manual

[msftclas]

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[Nacimota]

I just reproduced this on my machine, but it appears to be only the foreground colour that gets changed. The background colour is already being reset at the end of the inner for loop on line 167.

[metathinker]

The background colour is already being reset at the end of the inner for loop on line 167.

I did notice that, but I thought it would be better to reset both colors at the same time outside the loops for clarity, rather than trying to reset the foreground color in the loop as well.

[zadjii-msft]

I also prefer the unambiguity of resetting both at the same time. Thanks for the good catch!