Color customization

To change color for Shimmering/loading screens, You need to add the following options in the metadata. shimmerBackgroundColor for background color, titleTextColor for loading text color, subtitleTextColor for loading sub text color. colors of shimmering effect also related to the titleTextColor and subtitleTextColor

MetaMapFlutter.showMetaMapFlow(clientId:"YOUR_CLIENT_ID", flowId:"YOUR_FLOW_ID",
                              metadata: {"shimmerBackgroundColor": "hexColor", "titleTextColor":  "hexColor", "subtitleTextColor": "hexColor"});