CMake

Port away from deprecated API in Qt 6.6: QColor::setNamedColor #96

Job	Run time
build (ubuntu-latest, Debug, static, 5.12, x86_64)	1m 34s
build (ubuntu-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 39s
build (ubuntu-latest, Debug, shared, 5.12, x86_64)	57s
build (ubuntu-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 9s
build (ubuntu-latest, Release, static, 5.12, x86_64)	1m 10s
build (ubuntu-latest, Release, static, 6.6.0, x86_64;arm64)	1m 10s
build (ubuntu-latest, Release, shared, 5.12, x86_64)	57s
build (ubuntu-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 5s
build (windows-latest, Debug, static, 5.12, x86_64)	2m 21s
build (windows-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 23s
build (windows-latest, Debug, shared, 5.12, x86_64)	1m 53s
build (windows-latest, Debug, shared, 6.6.0, x86_64;arm64)	2m 16s
build (windows-latest, Release, static, 5.12, x86_64)	1m 48s
build (windows-latest, Release, static, 6.6.0, x86_64;arm64)	1m 36s
build (windows-latest, Release, shared, 5.12, x86_64)	1m 37s
build (windows-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 37s
build (macos-latest, Debug, static, 5.12, x86_64)	45s
build (macos-latest, Debug, static, 6.6.0, x86_64;arm64)	5m 58s
build (macos-latest, Debug, shared, 5.12, x86_64)	29s
build (macos-latest, Debug, shared, 6.6.0, x86_64;arm64)	3m 48s
build (macos-latest, Release, static, 5.12, x86_64)	57s
build (macos-latest, Release, static, 6.6.0, x86_64;arm64)	1m 21s
build (macos-latest, Release, shared, 5.12, x86_64)	36s
build (macos-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 34s
	39m 40s

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