Without hearing what you're actually hearing, I will say that sometimes I find the Colonials a little darker myself but it seems to be volume dependent. At lower volumes it sounds a little muddy but at stage volume it works great. That being said, you can always try turning up the Definition in the amp settings and see if that helps. Without knowing your pickups, monitoring speaker, etc., it may just not fit sonically with what you like. Maybe some other guys might have some insights as well if they find a better workaround? I would start with Definition and maybe try it at different volumes and then go to eq settings. I try to start with neutral eq's but my ears change from day to day and week to week so my profiles may reflect that as well. I try to keep them as consistent as I can but I'm at the mercy of my poor, overworked ears sometimes. Hope this helps.
And THANK YOU to everyone who has been responding to my weekend sale. Much appreciated. I've been driving and traveling to visit my family so I have been checking in but haven't had much time to write. Happy Holidays!
The Colonial is definitely darker than your typical Marshall style amp. I did some research and Heritage Amplifiers recommends V30 and G12H30 speakers to go with the Colonial, which are brighter speakers than a normal G12m Greenback speaker. For the Colonial Pack, I switched the speaker in the profiles to an Ownhammer Marshall 412 cab with V30s and G12-50GL impulse response (IR) in his Marsh-UK Collection pack and it sounds like a match made in heaven!