Color Settings Are Lost When Environment Switches

[lettucehead]

If I make my environment cool in Grid World, by making lines white instead of black, and grid red instead of grey, and background ("sky") blue instead of black, then change Environment to Water by accident, then change to Grid again, I lose my customizations.

[jerknose]

@lettucehead, please use this template when reporting issues: https://github.com/kinetecharts/openPerform/blob/master/.github/ISSUE_TEMPLATE/bug_report.md