Unable (or unclear how) to set "default bold" color

What steps will reproduce the problem?
1. Use a theme like Solarized Light 
(https://github.com/mavnn/mintty-colors-solarized) or anything with a bright 
background.
2. Type in the terminal: echo "\x1B[1mTest String"

What is the expected output? What do you see instead?
The text is supposed to be painted "bold", but its color is much lighter than 
the default set ForegroundColour in minttyrc and on some monitors it's barely 
visible.
This "default bold" color is extremely common, e.g. used by 'top' and 'man' for 
highlights!

What versions of mintty, Cygwin/MSYS, and Windows are you using?
mintty 1.1.3

Please provide any additional information below.
I was unable to find a way to tweak the "default" bold color for mintty. If I 
use BoldAsFont=no and BoldAsColour=yes, this "default" bold '[1m', which is 
supposed to be the bold equivalent of ForegroundColour, does not seem to map to 
any configurable color in minttyrc. From where is this setting taken? Maybe 
there should be a "ForegroundBoldColour" setting.
Am I missing something?

Original issue reported on code.google.com by erezshermer@gmail.com on 15 Feb 2015 at 4:44

ofaify / mintty

Unable (or unclear how) to set "default bold" color #443