The text/code piece is the following:
Timestamps
-----------
...
1) UTC+2: 2021-06-10T09:00:42:red:`+02:00`
2) UTC: 2021-06-10T09:00:42:red:`Z`
Undesired result (no colored text achieved):

It works when inserting a space in front of :red:, but this is not an acceptable workaround as the ISO-8601-format does not allow for spaces.
Undesired result of workaround (colored text achieved, but with spaces):

How can I achieve colored text without undesired spaces in front of the colored piece?