Is there a way to change colour opacity on the chat bot icon word press plugin for both desktop and mobile?
First - the wordpress plugin does not actually create or control anything. It embeds the hubspot tracking code on your wordpress site and gives you a way to see hubspot without leaving your wordpress admin.
I believe you can currently only set the chatbot to solid colors without the option to add opacity in the color picker. I would recommend you post this in the ideas board as having a color picker that always accepts opacity would be nice to have. https://community.hubspot.com/t5/HubSpot-Ideas/idb-p/HubSpot_Ideas