one hardcoded default colour less
Merge pull request #382 from grejppi/stable-0.4-bbcolour

Automatically change old B&B default colour to the new one
Define all pattern colours in CSS and make them stylable
also coding style improvements (remove leading underscores from header guards)
Some cleanup (remove temporary comments)
Fix a bug where copied instrument tracks appear grey
Merge pull request #384 from diizy/stable-0.4

Make all pattern colours CSS-stylable
sf2 plugin:fixes naming issue
Merge pull request #390 from wongcc966422/issue360

sf2 plugin: fixes naming issue