The cooper's cans seem to love plain malt extract additions. I do that myself. I brewed the dark ale as a base for my "whiskely ale" I'm aging in bottles as of yesterday.
Here's the interesting part. I added 3lbs of Munton's plain amber DME to it. I used half the DME in the boil to do my hop additions,20,10,& -10. When it reached a stable FG,& mellowed/cleared a bit,I took a sample. Wow! The color was beautiful. Like a dark brown with a ruby color mixed with that. Like a red ale mixed with a brown one!
The flavor was like a vanilla cream with the dark,smooth malt added in. I'm going to brew this one again,but not oak it this time. The bourbon soaked medium toast French oak chips,after 8 days in secondary,lightened the color,got more oak/bourbon flavor.
I'm hoping when it clears again,& conditions,that I'll get those colors/flavors again! The combo of dark ale & plain amber DME was great by itself!