EDIT - something like the napalm gas, is thick and does not disperse or propane, which creates a red flame on the beginning and blue at the end. Does not produce smoke
Do we really need more explosive material? It would be cool but..... with a little work, you can make composite bombs with more then 1 substance. If you're geek enough, programe your own.
Yes, supporting this idea And i love blue flame (even just in fancy) May be this gas also should be heavy and very slowly fall down? (if it's possible)