Facebook and Instagram Shop to use only main photo as product photo

[tommyz23]

Hello,

I'm trying to display my t-shirts on my Facebook shop but only using the "Main" image of the product in Shopify rather than using random colors of the variants that Facebook chooses for product display.  

Here is an example:

For the red shirts, I do not want them to show up here because customers may not like that color when they see the product, so Id rather just have them choose that color if they want it later.  

I want to use this "Main" image for each one of my shirts, not facebook's randomization:

Is this even possible without huge modification?  

Here is my facebook shop link:

CrazyTomtshirts | Facebook

Thanks,

Tommy