About logo icon doesn't denote chain type (?) in About/ Help message window/ dialog

[pablomartin4btc]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current behaviour

BitcoinQT shows the same about logo icon (orange colour) in all chain type instances, not being consistent with the task bar icon or initia/ start dialog:

Expected behaviour

I think showing the correct icon (colour) that indicates the chain type as in the splash screen (first/ initial dialog when qt starts) and task bar app icon.

Steps to reproduce

Run bitcoin-qt and bitcoin-qt -regnet (or -signet/ -tesnet), click on or press Alt-H and select "About Bitcoin Core", a window with the same title as of the previous selected menu item will popup showing the classic Bitcoin orange icon at the top left corner.

Relevant log output

No response

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

v25.99

Operating system and version

Ubuntu 22.04

Machine specifications

No response