Board Thread:Support Requests - Getting Technical/@comment-4151266-20151125234335

Recently, I've been thinking of having the WWII Wiki make the shift to portable infoboxes, but before I do so, I just wanted to make sure that the new infoboxes are designed exactly as they are wanted. I made a draft for one type of infobox here. However, compared to its predecessor, it is missing a couple things. First of all, how do I change the header background color to the same green used on the old infobox? Second, how do I make the bottom edges of the infobox rounded like the original? And finally, is there any way to put the labels and the information on the same line? As it stands, portable infoboxes tend to waste a lot of space when instead of writing information like this:

Weight - 65 kg

they list it like this:
 * Weight
 * 65 kg

Thanks in advance to anyone who can help! 