I think we should think and discuss about it again.

On the one hand, we should not style everything, on the other hand, we should make it clear if we mean a field, a value, code, or an attribute. For the reader and for future writers.

For fields, we have a <field>fieldName</field>. Maybe rename it to <fieldName>fieldName</fieldName> to make it clearer.

Values do not have to be styled, but it would be nice to easily see them. Maybe just use a monospaced font without any color change. Maybe we can use <fieldValue>fieldValue</fieldValue> or something similar.

Code should be styled as code, like code in here (monospaced font with a background). Examples for code are internalName = FooBar and expandX = Yes.

Attributes are similar to code and could be styled similar - if at all. Examples for attributes are MinDistance (in a vessel skeleton) and type (in an MDL declaration of a new field).