Hello. Yes, sure. You can change the background color of the widget. For this you need to use:

this is how you can change colors in the widget <style>
:root {
--cb-block-bg: #FFFFFF;
--cb-button-bg: #F5F5F5;
--cb-button-bg-hover: #E8E8E8;
--cb-text: #0B2D2D;
--cb-text-light: #ADADAD;
--cb-price: #319446;
--cb-primary-bg: #80475B;
--cb-primary-bg-hover: #B05273;
--cb-primary-text: #FFFFFF;
--cb-primary-text-hover: #FFFFFF;
--cb-border: #F1F1F1;
--cb-error: #DA6F6F;
--cb-border-focus: #B4B4C9;
--cb-success: #005F5F;
--cb-disabled: #B8B8C8;
--cb-shadow: 0px 10px 15px rgba(0,0,0,0.1);
}
</style>

Hope this helps you and you can get the design you want.

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