You can't, it's hard coded intentionally from back when they needed it to feature ads.

Is this still the case? not a fan of the current spechud would love to have a custom one

Very temporarily I think they allowed spec hud editing in the steam exclusive build, but it messed up features especially in CA where you couldn't see who you were watching, so they rolled that back and it's locked again now.

/me licks Yakumo


*tastes like a museum and spider webs*