Define name dialog. Blue color for invalid name highlight instead red.
And I suggest to change it to red.
For example, Condition formatting dialog uses red highlighting for wrong data range in Range field.
Steps to Reproduce:
1. Open Sheet->Named ranged and expressions->Define
2. Enter any name with space in Name field
3. Look at phrase "Invalid name. Use only letters, numbers and underscore." with blue highlighting.
"Invalid name. Use only letters, numbers and underscore." has blue highlighting.
"Invalid name. Use only letters, numbers and underscore." has red highlighting.
User Profile Reset: No
it was always, I checked it down to 5.2.7 version
Created attachment 160553 [details]
Define name dialog with blue highlighting
The blue is not ideal, sure. But even better when we make the input itself responding and show the reason in a tooltip. Prepared a generic solution for bug 129032 at https://gerrit.libreoffice.org/c/core/+/85101
Unfortunately, I don't have free time to fix it=(