[TYPO3-english] Typo3 6.2.4 Bootstrap background color

[Holger B]

Hi,

I've installed Typo3 6.2.4 with the bootstrap_package extension and tried to change the layout, i.e. the background color. 

1.) Using the Template Tools - Constant Editor (drop down menu) and changing values in the BOOTSTRAP PACKAGE: STYLING section seems to crash Typo3, because it gives you a completely empty website then. Undoing the changes makes everything working fine again.

2.) Changing the background color in the bootstrap.min.css has no effect.

So, my question: How can I change the background color of my website? Is 1.) a bug that should be reported?