So I have blocks within block. What I want is to get a property set on the parent block to be availble on the child block. Is it possible to do?

[ContentType(DisplayName = "SubscriptionParentBlock", GUID = "56af697c-57a4-4599-a517-bb2e114b10bc", Description = "")]
    public class SubscriptionParentBlock : BlockData
    {
        [CultureSpecific]
        [Display(
            Name = "Heading",
            Description = "Main heading for the subscription.",
            GroupName = SystemTabNames.Content,
            Order = 10
        )]
        public virtual String Heading { get; set; }


        [Display(
    GroupName = SystemTabNames.Content,
    Name = "Background Color",
    Order = 11)]
        [ClientEditor(ClientEditingClass = "dijit/ColorPalette")]
        public virtual string TextBackgroundColor { get; set; }


        [Display(
        GroupName = SystemTabNames.Content,
        Order = 12)]
        [AllowedTypes(AllowedTypes = new[] { typeof(SubscriptionSubBlock) })]
        public virtual ContentArea SubBlocks { get; set; }

    }

The above one is my Parent Block and its TextBackgroundColor property I want in the child block which is like this

    [ContentType(DisplayName = "SubscriptionSubBlock", GUID = "19ee687e-a5e1-4f76-967e-6db3e73cee05", Description = "")]
    public class SubscriptionSubBlock : BlockData
    {

        [CultureSpecific]
        [Display(
            Name = "Heading",
            Description = "Sub heading for the subscription.",
            GroupName = SystemTabNames.Content,
            Order = 10
        )]
        public virtual String Heading { get; set; }


            [Display(
    GroupName = SystemTabNames.Content,
    Order = 320)]
            public virtual ContentArea ProductsBlock { get; set; }
    }

Is there a way around it?