Its not super clear what you are saying.
If you want to set something with a color, you have to have conditional checks, you cannot simply store it in a variable and that takes that away.
But I don't know what the Email is supposed to look like, can you give me an example, like a picture of what you want in the email? What does it look like.
Here is a simple example
Email Body
Are Pants Green: You could just put the answer as it will be Yes or no
BUT if you want to actually change the metadata about something then you have to use expressions
Second Example
What Color are the Pants: add expression to return Green if yes, Blue if no.
You do not need Condition actions, you simply need to use expressions to check in the specific area that is needed. So if you can share what exactly you want to build in your email it will be easier.
But the answer is, you don't need Conditions, just expressions.