JED 1.6.0+ - Customized Nether with sky stuff

{
    "dimensions": [
        {
            "dim": -1,
            "override": true,
            "dimensiontype": {
                "id": -1,
                "name": "Nether",
                "suffix": "",
                "keeploaded": false,
                "worldprovider": "WorldProviderHellJED"
            },
            "worldinfo_onetime": {
                "generatorName": "BIOMESOP",
                "DayTime": 18000,
                "GameRules": {
                    "doDaylightCycle": "false"
                }
            },
            "jed": {
                "SkyColor": "e0e000",
                "FogColor": "f0c040",
                "CloudColor": "ffd050",
                "SkyRenderType": 1,
                "SkyDisableFlags": 3
            }
        }
    ]
}