Laveol: Even last name Kolisev is a Macedonian one. Last names ending with "ev", "ov" are not Bulgarian. It happens that you have those in Bulgaria. But you have those last names in Macedonia, Russia, Check Republic, and so on.

Kolisev is a Macedonian last name. Same is Kolisevski. You can find both kinds with "ov|ova", "ev|eva", "vski/vska", "ski/ska" and others in Republic of Macedonia. So changing a last name from Kolisev to Kolisevski does not have any Bulgarian/AntiBulgarian implications. My last name is "Janev". You can find in Macedonia also "Janevski", "Janeski". All of those are Macedonian last names. The fact that you can have "Janev" in Bulgaria does not translate to ethnicity/origin claims in Macedonia.

Here are some last names that finish on "ov", "ev" and are not Bulgarian neither Macedonian:

[Sergei Lavrov]
[Anton Chekhov]
[Martina Navratilova]

So these last name endings are typical but not exclusive for some of the Slavic languages.
Same is with "vski/vska", "ski/ska", "ich" which are shared between a number of Slavic languages.

To come back to Kolisevski: Kolisevski is a Macedonian last name, as well is Kolisev. If you can find a person living in Bulgaria with one of those last names, and probably you could not, does not gives any conclusion about ethnicity or being a Pro-Bulgarian.